diff --git a/codeforces/1049/2140a.cc b/codeforces/1049/2140a.cc
new file mode 100644
index 0000000..baa4773
--- /dev/null
+++ b/codeforces/1049/2140a.cc
@@ -0,0 +1,20 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+void solve() {
+  std::cout << "ho\n";
+}
+
+int main() {
+  std::cin.tie(nullptr)->sync_with_stdio(false);
+
+  int tc = 1;
+  std::cin >> tc;
+
+  for (int t = 0; t < tc; ++t) {
+    solve();
+  }
+
+  return 0;
+}
diff --git a/codeforces/1049/2140b.cc b/codeforces/1049/2140b.cc
new file mode 100644
index 0000000..36eff3c
--- /dev/null
+++ b/codeforces/1049/2140b.cc
@@ -0,0 +1,83 @@
+#include <bits/stdc++.h> // {{{
+
+#include <version>
+#ifdef __cpp_lib_ranges_enumerate
+#include <ranges>
+namespace rv = std::views;
+namespace rs = std::ranges;
+#endif
+
+// https://codeforces.com/blog/entry/96344
+
+#pragma GCC optimize("O2,unroll-loops")
+#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
+
+using namespace std;
+
+using i32 = int32_t;
+using u32 = uint32_t;
+using i64 = int64_t;
+using u64 = uint64_t;
+using f64 = double;
+using f128 = long double;
+
+#if __cplusplus >= 202002L
+template <typename T> constexpr T MIN = std::numeric_limits<T>::min();
+
+template <typename T> constexpr T MAX = std::numeric_limits<T>::max();
+
+template <typename T> [[nodiscard]] static T sc(auto &&x) {
+  return static_cast<T>(x);
+}
+
+template <typename T> [[nodiscard]] static T sz(auto &&x) {
+  return static_cast<T>(x.size());
+}
+#endif
+
+static void NO() { std::cout << "NO\n"; }
+
+static void YES() { std::cout << "YES\n"; }
+
+template <typename T> using vec = std::vector<T>;
+
+#define all(x) (x).begin(), (x).end()
+#define rall(x) (x).rbegin(), (x).rend()
+#define ff first
+#define ss second
+
+#ifdef LOCAL
+#define db(...) std::print(__VA_ARGS__)
+#define dbln(...) std::println(__VA_ARGS__)
+#else
+#define db(...)
+#define dbln(...)
+#endif
+//  }}}
+
+void solve() {
+  int x;
+  cout << x << '\n';
+}
+
+int main() { // {{{
+  std::cin.exceptions(std::cin.failbit);
+
+#ifdef LOCAL
+  std::cerr.rdbuf(std::cout.rdbuf());
+  std::cout.setf(std::ios::unitbuf);
+  std::cerr.setf(std::ios::unitbuf);
+#else
+  std::cin.tie(nullptr)->sync_with_stdio(false);
+#endif
+
+  u32 tc = 1;
+  std::cin >> tc;
+
+  for (u32 t = 0; t < tc; ++t) {
+    solve();
+  }
+
+  return 0;
+}
+// }}}
diff --git a/codeforces/1049/io/2140a.expected b/codeforces/1049/io/2140a.expected
new file mode 100644
index 0000000..93e26d2
--- /dev/null
+++ b/codeforces/1049/io/2140a.expected
@@ -0,0 +1,4 @@
+0
+1
+2
+1
diff --git a/codeforces/1049/io/2140a.in b/codeforces/1049/io/2140a.in
new file mode 100644
index 0000000..e3b2e68
--- /dev/null
+++ b/codeforces/1049/io/2140a.in
@@ -0,0 +1,9 @@
+4
+3
+001
+4
+0110
+6
+110100
+6
+101011
diff --git a/codeforces/1049/io/2140a.out b/codeforces/1049/io/2140a.out
new file mode 100644
index 0000000..14a2c5b
--- /dev/null
+++ b/codeforces/1049/io/2140a.out
@@ -0,0 +1,9 @@
+ho
+ho
+ho
+ho
+
+[code]: 0
+[time]: 2.76 ms
+[debug]: false
+[matches]: false
diff --git a/codeforces/1049/io/2140b.expected b/codeforces/1049/io/2140b.expected
new file mode 100644
index 0000000..b7ae5f5
--- /dev/null
+++ b/codeforces/1049/io/2140b.expected
@@ -0,0 +1,6 @@
+1
+12
+998
+7872
+8190
+174036
diff --git a/codeforces/1049/io/2140b.in b/codeforces/1049/io/2140b.in
new file mode 100644
index 0000000..e6bc53b
--- /dev/null
+++ b/codeforces/1049/io/2140b.in
@@ -0,0 +1,7 @@
+6
+8
+42
+1000
+66666
+106344
+9876543
diff --git a/codeforces/1049/io/2140b.out b/codeforces/1049/io/2140b.out
new file mode 100644
index 0000000..56ae20c
--- /dev/null
+++ b/codeforces/1049/io/2140b.out
@@ -0,0 +1,11 @@
+0
+0
+0
+0
+0
+0
+
+[code]: 0
+[time]: 2.49 ms
+[debug]: false
+[matches]: false
diff --git a/codeforces/1050/2148a.cc b/codeforces/1050/2148a.cc
new file mode 100644
index 0000000..6e67e29
--- /dev/null
+++ b/codeforces/1050/2148a.cc
@@ -0,0 +1,93 @@
+#include <bits/stdc++.h> // {{{
+
+#include <version>
+#ifdef __cpp_lib_ranges_enumerate
+#include <ranges>
+namespace rv = std::views;
+namespace rs = std::ranges;
+#endif
+
+// https://codeforces.com/blog/entry/96344
+
+#pragma GCC optimize("O2,unroll-loops")
+#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
+
+using namespace std;
+
+using i16 = int16_t;
+using u16 = uint16_t;
+using i32 = int32_t;
+using u32 = uint32_t;
+using i64 = int64_t;
+using u64 = uint64_t;
+using f64 = double;
+using f128 = long double;
+
+#if __cplusplus >= 202002L
+template <typename T> constexpr T MIN = std::numeric_limits<T>::min();
+
+template <typename T> constexpr T MAX = std::numeric_limits<T>::max();
+
+template <typename T> [[nodiscard]] static T sc(auto &&x) {
+  return static_cast<T>(x);
+}
+
+template <typename T> [[nodiscard]] static T sz(auto &&x) {
+  return static_cast<T>(x.size());
+}
+#endif
+
+static void NO() { std::cout << "NO\n"; }
+
+static void YES() { std::cout << "YES\n"; }
+
+template <typename T> using vec = std::vector<T>;
+
+#define all(x) (x).begin(), (x).end()
+#define rall(x) (x).rbegin(), (x).rend()
+#define ff first
+#define ss second
+
+#ifdef LOCAL
+#define db(...) std::print(__VA_ARGS__)
+#define dbln(...) std::println(__VA_ARGS__)
+#else
+#define db(...)
+#define dbln(...)
+#endif
+//  }}}
+
+void solve() {
+  u16 n, x;
+  cin >> x >> n;
+
+  if (n & 1) {
+    cout << x;
+  } else {
+    cout << 0;
+  }
+
+  cout << '\n';
+}
+
+int main() { // {{{
+  std::cin.exceptions(std::cin.failbit);
+
+#ifdef LOCAL
+  std::cerr.rdbuf(std::cout.rdbuf());
+  std::cout.setf(std::ios::unitbuf);
+  std::cerr.setf(std::ios::unitbuf);
+#else
+  std::cin.tie(nullptr)->sync_with_stdio(false);
+#endif
+
+  u32 tc = 1;
+  std::cin >> tc;
+
+  for (u32 t = 0; t < tc; ++t) {
+    solve();
+  }
+
+  return 0;
+}
+// }}}
diff --git a/codeforces/1050/2148b.cc b/codeforces/1050/2148b.cc
new file mode 100644
index 0000000..88a657b
--- /dev/null
+++ b/codeforces/1050/2148b.cc
@@ -0,0 +1,94 @@
+#include <bits/stdc++.h> // {{{
+
+#include <version>
+#ifdef __cpp_lib_ranges_enumerate
+#include <ranges>
+namespace rv = std::views;
+namespace rs = std::ranges;
+#endif
+
+// https://codeforces.com/blog/entry/96344
+
+#pragma GCC optimize("O2,unroll-loops")
+#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
+
+using namespace std;
+
+using i16 = int16_t;
+using u16 = uint16_t;
+using i32 = int32_t;
+using u32 = uint32_t;
+using i64 = int64_t;
+using u64 = uint64_t;
+using f64 = double;
+using f128 = long double;
+
+#if __cplusplus >= 202002L
+template <typename T> constexpr T MIN = std::numeric_limits<T>::min();
+
+template <typename T> constexpr T MAX = std::numeric_limits<T>::max();
+
+template <typename T> [[nodiscard]] static T sc(auto &&x) {
+  return static_cast<T>(x);
+}
+
+template <typename T> [[nodiscard]] static T sz(auto &&x) {
+  return static_cast<T>(x.size());
+}
+#endif
+
+static void NO() { std::cout << "NO\n"; }
+
+static void YES() { std::cout << "YES\n"; }
+
+template <typename T> using vec = std::vector<T>;
+
+#define all(x) (x).begin(), (x).end()
+#define rall(x) (x).rbegin(), (x).rend()
+#define ff first
+#define ss second
+
+#ifdef LOCAL
+#define db(...) std::print(__VA_ARGS__)
+#define dbln(...) std::println(__VA_ARGS__)
+#else
+#define db(...)
+#define dbln(...)
+#endif
+//  }}}
+
+void solve() {
+  u32 n, m;
+  u64 x, y;
+  cin >> n >> m >> x >> y;
+
+  vec<u32> horiz(n), vert(m);
+  for (auto &e : horiz)
+    cin >> e;
+  for (auto &e : vert)
+    cin >> e;
+
+  println("{}", n + m);
+}
+
+int main() { // {{{
+  std::cin.exceptions(std::cin.failbit);
+
+#ifdef LOCAL
+  std::cerr.rdbuf(std::cout.rdbuf());
+  std::cout.setf(std::ios::unitbuf);
+  std::cerr.setf(std::ios::unitbuf);
+#else
+  std::cin.tie(nullptr)->sync_with_stdio(false);
+#endif
+
+  u32 tc = 1;
+  std::cin >> tc;
+
+  for (u32 t = 0; t < tc; ++t) {
+    solve();
+  }
+
+  return 0;
+}
+// }}}
diff --git a/codeforces/1050/2148c.cc b/codeforces/1050/2148c.cc
new file mode 100644
index 0000000..737e9b8
--- /dev/null
+++ b/codeforces/1050/2148c.cc
@@ -0,0 +1,109 @@
+#include <bits/stdc++.h> // {{{
+
+#include <version>
+#ifdef __cpp_lib_ranges_enumerate
+#include <ranges>
+namespace rv = std::views;
+namespace rs = std::ranges;
+#endif
+
+// https://codeforces.com/blog/entry/96344
+
+#pragma GCC optimize("O2,unroll-loops")
+#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
+
+using namespace std;
+
+using i16 = int16_t;
+using u16 = uint16_t;
+using i32 = int32_t;
+using u32 = uint32_t;
+using i64 = int64_t;
+using u64 = uint64_t;
+using f64 = double;
+using f128 = long double;
+
+#if __cplusplus >= 202002L
+template <typename T> constexpr T MIN = std::numeric_limits<T>::min();
+
+template <typename T> constexpr T MAX = std::numeric_limits<T>::max();
+
+template <typename T> [[nodiscard]] static T sc(auto &&x) {
+  return static_cast<T>(x);
+}
+
+template <typename T> [[nodiscard]] static T sz(auto &&x) {
+  return static_cast<T>(x.size());
+}
+#endif
+
+static void NO() { std::cout << "NO\n"; }
+
+static void YES() { std::cout << "YES\n"; }
+
+template <typename T> using vec = std::vector<T>;
+
+#define all(x) (x).begin(), (x).end()
+#define rall(x) (x).rbegin(), (x).rend()
+#define ff first
+#define ss second
+
+#ifdef LOCAL
+#define db(...) std::print(__VA_ARGS__)
+#define dbln(...) std::println(__VA_ARGS__)
+#else
+#define db(...)
+#define dbln(...)
+#endif
+//  }}}
+
+void solve() {
+  u32 n, m;
+  cin >> n >> m;
+
+  u32 a, b;
+
+  u16 side = 0;
+  u32 t = 0;
+  u32 ans = 0;
+
+  for (u32 i = 0; i < n; ++i) {
+    cin >> a >> b;
+
+    // at time a, must be at side b; was on side side @ time t
+
+    u32 diff = a - t;
+    ans += diff;
+    if (diff & 1 && b == side || !(diff & 1) && b != side) {
+      --ans;
+    }
+    t = a;
+    side = b;
+  }
+
+  ans += m - t;
+
+  println("{}", ans);
+}
+
+int main() { // {{{
+  std::cin.exceptions(std::cin.failbit);
+
+#ifdef LOCAL
+  std::cerr.rdbuf(std::cout.rdbuf());
+  std::cout.setf(std::ios::unitbuf);
+  std::cerr.setf(std::ios::unitbuf);
+#else
+  std::cin.tie(nullptr)->sync_with_stdio(false);
+#endif
+
+  u32 tc = 1;
+  std::cin >> tc;
+
+  for (u32 t = 0; t < tc; ++t) {
+    solve();
+  }
+
+  return 0;
+}
+// }}}
diff --git a/codeforces/1050/2148d.cc b/codeforces/1050/2148d.cc
new file mode 100644
index 0000000..46b1340
--- /dev/null
+++ b/codeforces/1050/2148d.cc
@@ -0,0 +1,109 @@
+#include <bits/stdc++.h> // {{{
+
+#include <version>
+#ifdef __cpp_lib_ranges_enumerate
+#include <ranges>
+namespace rv = std::views;
+namespace rs = std::ranges;
+#endif
+
+// https://codeforces.com/blog/entry/96344
+
+#pragma GCC optimize("O2,unroll-loops")
+#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
+
+using namespace std;
+
+using i16 = int16_t;
+using u16 = uint16_t;
+using i32 = int32_t;
+using u32 = uint32_t;
+using i64 = int64_t;
+using u64 = uint64_t;
+using f64 = double;
+using f128 = long double;
+
+#if __cplusplus >= 202002L
+template <typename T> constexpr T MIN = std::numeric_limits<T>::min();
+
+template <typename T> constexpr T MAX = std::numeric_limits<T>::max();
+
+template <typename T> [[nodiscard]] static T sc(auto &&x) {
+  return static_cast<T>(x);
+}
+
+template <typename T> [[nodiscard]] static T sz(auto &&x) {
+  return static_cast<T>(x.size());
+}
+#endif
+
+static void NO() { std::cout << "NO\n"; }
+
+static void YES() { std::cout << "YES\n"; }
+
+template <typename T> using vec = std::vector<T>;
+
+#define all(x) (x).begin(), (x).end()
+#define rall(x) (x).rbegin(), (x).rend()
+#define ff first
+#define ss second
+
+#ifdef LOCAL
+#define db(...) std::print(__VA_ARGS__)
+#define dbln(...) std::println(__VA_ARGS__)
+#else
+#define db(...)
+#define dbln(...)
+#endif
+//  }}}
+
+void solve() {
+  u32 n, a;
+  cin >> n;
+
+  vec<u32> odd;
+  u64 even_total = 0, ans = 0;
+  for (u32 i = 0; i < n; ++i) {
+    cin >> a;
+
+    if (a & 1) {
+      odd.push_back(a);
+    } else {
+      even_total += a;
+    }
+  }
+
+  sort(rall(odd));
+
+  for (u32 i = 0; i < (odd.size() + 1) / 2; ++i) {
+    ans += odd[i];
+  }
+
+  if (ans > 0) {
+    ans += even_total;
+  }
+
+  println("{}", ans);
+}
+
+int main() { // {{{
+  std::cin.exceptions(std::cin.failbit);
+
+#ifdef LOCAL
+  std::cerr.rdbuf(std::cout.rdbuf());
+  std::cout.setf(std::ios::unitbuf);
+  std::cerr.setf(std::ios::unitbuf);
+#else
+  std::cin.tie(nullptr)->sync_with_stdio(false);
+#endif
+
+  u32 tc = 1;
+  std::cin >> tc;
+
+  for (u32 t = 0; t < tc; ++t) {
+    solve();
+  }
+
+  return 0;
+}
+// }}}
diff --git a/codeforces/1050/2148e.cc b/codeforces/1050/2148e.cc
new file mode 100644
index 0000000..956965c
--- /dev/null
+++ b/codeforces/1050/2148e.cc
@@ -0,0 +1,112 @@
+#include <bits/stdc++.h> // {{{
+
+#include <version>
+#ifdef __cpp_lib_ranges_enumerate
+#include <ranges>
+namespace rv = std::views;
+namespace rs = std::ranges;
+#endif
+
+// https://codeforces.com/blog/entry/96344
+
+#pragma GCC optimize("O2,unroll-loops")
+#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
+
+using namespace std;
+
+using i16 = int16_t;
+using u16 = uint16_t;
+using i32 = int32_t;
+using u32 = uint32_t;
+using i64 = int64_t;
+using u64 = uint64_t;
+using f64 = double;
+using f128 = long double;
+
+#if __cplusplus >= 202002L
+template <typename T> constexpr T MIN = std::numeric_limits<T>::min();
+
+template <typename T> constexpr T MAX = std::numeric_limits<T>::max();
+
+template <typename T> [[nodiscard]] static T sc(auto &&x) {
+  return static_cast<T>(x);
+}
+
+template <typename T> [[nodiscard]] static T sz(auto &&x) {
+  return static_cast<T>(x.size());
+}
+#endif
+
+static void NO() { std::cout << "NO\n"; }
+
+static void YES() { std::cout << "YES\n"; }
+
+template <typename T> using vec = std::vector<T>;
+
+#define all(x) (x).begin(), (x).end()
+#define rall(x) (x).rbegin(), (x).rend()
+#define ff first
+#define ss second
+
+#ifdef LOCAL
+#define db(...) std::print(__VA_ARGS__)
+#define dbln(...) std::println(__VA_ARGS__)
+#else
+#define db(...)
+#define dbln(...)
+#endif
+//  }}}
+
+void solve() {
+  u32 n, k;
+  cin >> n >> k;
+  vec<u32> a(n);
+  vec<u32> F(n + 1, 0);
+  for (u32 i = 0; i < n; ++i) {
+    cin >> a[i];
+    ++F[a[i]];
+  }
+
+  for (auto &f : F) {
+    if (f % k) {
+      println("0");
+      return;
+    }
+  }
+
+  u64 ans = 0;
+  map<u32, u32> f;
+
+  for (u32 l = 0, r = 0; r < n; ++r) {
+    ++f[a[r]];
+    while (f[a[r]] * k > F[a[r]]) {
+      --f[a[l]];
+      ++l;
+    }
+    ans += r - l + 1;
+  }
+
+  println("{}", ans);
+}
+
+int main() { // {{{
+  std::cin.exceptions(std::cin.failbit);
+
+#ifdef LOCAL
+  std::cerr.rdbuf(std::cout.rdbuf());
+  std::cout.setf(std::ios::unitbuf);
+  std::cerr.setf(std::ios::unitbuf);
+#else
+  std::cin.tie(nullptr)->sync_with_stdio(false);
+#endif
+
+  u32 tc = 1;
+  std::cin >> tc;
+
+  for (u32 t = 0; t < tc; ++t) {
+    solve();
+  }
+
+  return 0;
+}
+// }}}
diff --git a/codeforces/1050/io/2148a.1.cpin b/codeforces/1050/io/2148a.1.cpin
new file mode 100644
index 0000000..3b41c94
--- /dev/null
+++ b/codeforces/1050/io/2148a.1.cpin
@@ -0,0 +1,5 @@
+4
+1 4
+2 5
+3 6
+4 7
diff --git a/codeforces/1050/io/2148a.1.cpout b/codeforces/1050/io/2148a.1.cpout
new file mode 100644
index 0000000..33bafbf
--- /dev/null
+++ b/codeforces/1050/io/2148a.1.cpout
@@ -0,0 +1,4 @@
+0
+2
+0
+4
diff --git a/codeforces/1050/io/2148a.cpin b/codeforces/1050/io/2148a.cpin
new file mode 100644
index 0000000..3b41c94
--- /dev/null
+++ b/codeforces/1050/io/2148a.cpin
@@ -0,0 +1,5 @@
+4
+1 4
+2 5
+3 6
+4 7
diff --git a/codeforces/1050/io/2148a.cpout b/codeforces/1050/io/2148a.cpout
new file mode 100644
index 0000000..e1b18c3
--- /dev/null
+++ b/codeforces/1050/io/2148a.cpout
@@ -0,0 +1,9 @@
+0
+2
+0
+4
+
+[code]: 0
+[time]: 2.70 ms
+[debug]: false
+[ok]: true
diff --git a/codeforces/1050/io/2148a.expected b/codeforces/1050/io/2148a.expected
new file mode 100644
index 0000000..33bafbf
--- /dev/null
+++ b/codeforces/1050/io/2148a.expected
@@ -0,0 +1,4 @@
+0
+2
+0
+4
diff --git a/codeforces/1050/io/2148b.1.cpin b/codeforces/1050/io/2148b.1.cpin
new file mode 100644
index 0000000..09d2a07
--- /dev/null
+++ b/codeforces/1050/io/2148b.1.cpin
@@ -0,0 +1,7 @@
+2
+1 1 2 2
+1
+1
+2 1 100000 100000
+42 58
+32
diff --git a/codeforces/1050/io/2148b.1.cpout b/codeforces/1050/io/2148b.1.cpout
new file mode 100644
index 0000000..4792e70
--- /dev/null
+++ b/codeforces/1050/io/2148b.1.cpout
@@ -0,0 +1,2 @@
+2
+3
diff --git a/codeforces/1050/io/2148b.cpin b/codeforces/1050/io/2148b.cpin
new file mode 100644
index 0000000..09d2a07
--- /dev/null
+++ b/codeforces/1050/io/2148b.cpin
@@ -0,0 +1,7 @@
+2
+1 1 2 2
+1
+1
+2 1 100000 100000
+42 58
+32
diff --git a/codeforces/1050/io/2148b.cpout b/codeforces/1050/io/2148b.cpout
new file mode 100644
index 0000000..4346a55
--- /dev/null
+++ b/codeforces/1050/io/2148b.cpout
@@ -0,0 +1,7 @@
+2
+3
+
+[code]: 0
+[time]: 2.45 ms
+[debug]: false
+[ok]: true
diff --git a/codeforces/1050/io/2148b.expected b/codeforces/1050/io/2148b.expected
new file mode 100644
index 0000000..4792e70
--- /dev/null
+++ b/codeforces/1050/io/2148b.expected
@@ -0,0 +1,2 @@
+2
+3
diff --git a/codeforces/1050/io/2148c.1.cpin b/codeforces/1050/io/2148c.1.cpin
new file mode 100644
index 0000000..a67fd7c
--- /dev/null
+++ b/codeforces/1050/io/2148c.1.cpin
@@ -0,0 +1,12 @@
+3
+2 4
+2 1
+4 0
+2 7
+1 1
+4 0
+4 9
+1 0
+2 0
+6 1
+9 0
diff --git a/codeforces/1050/io/2148c.1.cpout b/codeforces/1050/io/2148c.1.cpout
new file mode 100644
index 0000000..1a969ff
--- /dev/null
+++ b/codeforces/1050/io/2148c.1.cpout
@@ -0,0 +1,3 @@
+2
+7
+6
diff --git a/codeforces/1050/io/2148c.cpin b/codeforces/1050/io/2148c.cpin
new file mode 100644
index 0000000..a67fd7c
--- /dev/null
+++ b/codeforces/1050/io/2148c.cpin
@@ -0,0 +1,12 @@
+3
+2 4
+2 1
+4 0
+2 7
+1 1
+4 0
+4 9
+1 0
+2 0
+6 1
+9 0
diff --git a/codeforces/1050/io/2148c.cpout b/codeforces/1050/io/2148c.cpout
new file mode 100644
index 0000000..a910fb2
--- /dev/null
+++ b/codeforces/1050/io/2148c.cpout
@@ -0,0 +1,8 @@
+2
+7
+6
+
+[code]: 0
+[time]: 2.88 ms
+[debug]: false
+[ok]: true
diff --git a/codeforces/1050/io/2148c.expected b/codeforces/1050/io/2148c.expected
new file mode 100644
index 0000000..1a969ff
--- /dev/null
+++ b/codeforces/1050/io/2148c.expected
@@ -0,0 +1,3 @@
+2
+7
+6
diff --git a/codeforces/1050/io/2148d.1.cpin b/codeforces/1050/io/2148d.1.cpin
new file mode 100644
index 0000000..041cea3
--- /dev/null
+++ b/codeforces/1050/io/2148d.1.cpin
@@ -0,0 +1,7 @@
+3
+3
+2 4 6
+4
+4 2 1 6
+4
+1000000000 999999999 1000000000 999999999
diff --git a/codeforces/1050/io/2148d.1.cpout b/codeforces/1050/io/2148d.1.cpout
new file mode 100644
index 0000000..8d57e36
--- /dev/null
+++ b/codeforces/1050/io/2148d.1.cpout
@@ -0,0 +1,3 @@
+0
+13
+2999999999
diff --git a/codeforces/1050/io/2148d.cpin b/codeforces/1050/io/2148d.cpin
new file mode 100644
index 0000000..041cea3
--- /dev/null
+++ b/codeforces/1050/io/2148d.cpin
@@ -0,0 +1,7 @@
+3
+3
+2 4 6
+4
+4 2 1 6
+4
+1000000000 999999999 1000000000 999999999
diff --git a/codeforces/1050/io/2148d.cpout b/codeforces/1050/io/2148d.cpout
new file mode 100644
index 0000000..e54108a
--- /dev/null
+++ b/codeforces/1050/io/2148d.cpout
@@ -0,0 +1,8 @@
+0
+13
+2999999999
+
+[code]: 0
+[time]: 2.53 ms
+[debug]: false
+[ok]: true
diff --git a/codeforces/1050/io/2148d.expected b/codeforces/1050/io/2148d.expected
new file mode 100644
index 0000000..8d57e36
--- /dev/null
+++ b/codeforces/1050/io/2148d.expected
@@ -0,0 +1,3 @@
+0
+13
+2999999999
diff --git a/codeforces/1050/io/2148e.1.cpin b/codeforces/1050/io/2148e.1.cpin
new file mode 100644
index 0000000..a78121c
--- /dev/null
+++ b/codeforces/1050/io/2148e.1.cpin
@@ -0,0 +1,9 @@
+4
+3 2
+1 1 1
+4 2
+1 2 1 2
+8 2
+3 3 3 3 2 2 2 2
+6 3
+1 1 1 1 1 1
diff --git a/codeforces/1050/io/2148e.1.cpout b/codeforces/1050/io/2148e.1.cpout
new file mode 100644
index 0000000..0b3a709
--- /dev/null
+++ b/codeforces/1050/io/2148e.1.cpout
@@ -0,0 +1,4 @@
+0
+7
+18
+11
diff --git a/codeforces/1050/io/2148e.cpin b/codeforces/1050/io/2148e.cpin
new file mode 100644
index 0000000..a78121c
--- /dev/null
+++ b/codeforces/1050/io/2148e.cpin
@@ -0,0 +1,9 @@
+4
+3 2
+1 1 1
+4 2
+1 2 1 2
+8 2
+3 3 3 3 2 2 2 2
+6 3
+1 1 1 1 1 1
diff --git a/codeforces/1050/io/2148e.cpout b/codeforces/1050/io/2148e.cpout
new file mode 100644
index 0000000..568b16b
--- /dev/null
+++ b/codeforces/1050/io/2148e.cpout
@@ -0,0 +1,9 @@
+0
+7
+18
+11
+
+[code]: 0
+[time]: 2.91 ms
+[debug]: false
+[ok]: true
diff --git a/codeforces/1050/io/2148e.expected b/codeforces/1050/io/2148e.expected
new file mode 100644
index 0000000..0b3a709
--- /dev/null
+++ b/codeforces/1050/io/2148e.expected
@@ -0,0 +1,4 @@
+0
+7
+18
+11
diff --git a/codeforces/634/1335a.cc b/codeforces/634/1335a.cc
new file mode 100644
index 0000000..84184f2
--- /dev/null
+++ b/codeforces/634/1335a.cc
@@ -0,0 +1,86 @@
+#include <bits/stdc++.h> // {{{
+
+#include <version>
+#ifdef __cpp_lib_ranges_enumerate
+#include <ranges>
+namespace rv = std::views;
+namespace rs = std::ranges;
+#endif
+
+// https://codeforces.com/blog/entry/96344
+
+#pragma GCC optimize("O2,unroll-loops")
+#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
+
+using namespace std;
+
+using i32 = int32_t;
+using u32 = uint32_t;
+using i64 = int64_t;
+using u64 = uint64_t;
+using f64 = double;
+using f128 = long double;
+
+#if __cplusplus >= 202002L
+template <typename T> constexpr T MIN = std::numeric_limits<T>::min();
+
+template <typename T> constexpr T MAX = std::numeric_limits<T>::max();
+
+template <typename T> [[nodiscard]] static T sc(auto &&x) {
+  return static_cast<T>(x);
+}
+
+template <typename T> [[nodiscard]] static T sz(auto &&x) {
+  return static_cast<T>(x.size());
+}
+#endif
+
+static void NO() { std::cout << "NO\n"; }
+
+static void YES() { std::cout << "YES\n"; }
+
+template <typename T> using vec = std::vector<T>;
+
+#define all(x) (x).begin(), (x).end()
+#define rall(x) (x).rbegin(), (x).rend()
+#define ff first
+#define ss second
+
+#ifdef LOCAL
+#define db(...) std::print(__VA_ARGS__)
+#define dbln(...) std::println(__VA_ARGS__)
+#else
+#define db(...)
+#define dbln(...)
+#endif
+//  }}}
+
+void solve() {
+  u32 n;
+  cin >> n;
+
+  u32 ans = (n + 1) / 2 - 1;
+  println("{}", ans);
+}
+
+int main() { // {{{
+  std::cin.exceptions(std::cin.failbit);
+
+#ifdef LOCAL
+  std::cerr.rdbuf(std::cout.rdbuf());
+  std::cout.setf(std::ios::unitbuf);
+  std::cerr.setf(std::ios::unitbuf);
+#else
+  std::cin.tie(nullptr)->sync_with_stdio(false);
+#endif
+
+  u32 tc = 1;
+  std::cin >> tc;
+
+  for (u32 t = 0; t < tc; ++t) {
+    solve();
+  }
+
+  return 0;
+}
+// }}}
diff --git a/codeforces/634/1335b.cc b/codeforces/634/1335b.cc
new file mode 100644
index 0000000..2c444e9
--- /dev/null
+++ b/codeforces/634/1335b.cc
@@ -0,0 +1,97 @@
+#include <bits/stdc++.h> // {{{
+
+#include <version>
+#ifdef __cpp_lib_ranges_enumerate
+#include <ranges>
+namespace rv = std::views;
+namespace rs = std::ranges;
+#endif
+
+// https://codeforces.com/blog/entry/96344
+
+#pragma GCC optimize("O2,unroll-loops")
+#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
+
+using namespace std;
+
+using i32 = int32_t;
+using u32 = uint32_t;
+using i64 = int64_t;
+using u64 = uint64_t;
+using f64 = double;
+using f128 = long double;
+
+#if __cplusplus >= 202002L
+template <typename T> constexpr T MIN = std::numeric_limits<T>::min();
+
+template <typename T> constexpr T MAX = std::numeric_limits<T>::max();
+
+template <typename T> [[nodiscard]] static T sc(auto &&x) {
+  return static_cast<T>(x);
+}
+
+template <typename T> [[nodiscard]] static T sz(auto &&x) {
+  return static_cast<T>(x.size());
+}
+#endif
+
+static void NO() { std::cout << "NO\n"; }
+
+static void YES() { std::cout << "YES\n"; }
+
+template <typename T> using vec = std::vector<T>;
+
+#define all(x) (x).begin(), (x).end()
+#define rall(x) (x).rbegin(), (x).rend()
+#define ff first
+#define ss second
+
+#ifdef LOCAL
+#define db(...) std::print(__VA_ARGS__)
+#define dbln(...) std::println(__VA_ARGS__)
+#else
+#define db(...)
+#define dbln(...)
+#endif
+//  }}}
+
+void solve() {
+  u32 n, a, b;
+  cin >> n >> a >> b;
+
+  string ans(n, 'a');
+
+  char c = 'a';
+  for (u32 i = a - 1, count = 0; count < b; ++count, --i) {
+    ans[i] = c;
+    ++c;
+  }
+
+  for (u32 i = a; i < n; ++i) {
+    ans[i] = ans[i - b];
+  }
+
+  println("{}", ans);
+}
+
+int main() { // {{{
+  std::cin.exceptions(std::cin.failbit);
+
+#ifdef LOCAL
+  std::cerr.rdbuf(std::cout.rdbuf());
+  std::cout.setf(std::ios::unitbuf);
+  std::cerr.setf(std::ios::unitbuf);
+#else
+  std::cin.tie(nullptr)->sync_with_stdio(false);
+#endif
+
+  u32 tc = 1;
+  std::cin >> tc;
+
+  for (u32 t = 0; t < tc; ++t) {
+    solve();
+  }
+
+  return 0;
+}
+// }}}
diff --git a/codeforces/634/1335c.cc b/codeforces/634/1335c.cc
new file mode 100644
index 0000000..60c1aa9
--- /dev/null
+++ b/codeforces/634/1335c.cc
@@ -0,0 +1,117 @@
+#include <bits/stdc++.h> // {{{
+
+#include <version>
+#ifdef __cpp_lib_ranges_enumerate
+#include <ranges>
+namespace rv = std::views;
+namespace rs = std::ranges;
+#endif
+
+// https://codeforces.com/blog/entry/96344
+
+#pragma GCC optimize("O2,unroll-loops")
+#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
+
+using namespace std;
+
+using i32 = int32_t;
+using u32 = uint32_t;
+using i64 = int64_t;
+using u64 = uint64_t;
+using f64 = double;
+using f128 = long double;
+
+#if __cplusplus >= 202002L
+template <typename T> constexpr T MIN = std::numeric_limits<T>::min();
+
+template <typename T> constexpr T MAX = std::numeric_limits<T>::max();
+
+template <typename T> [[nodiscard]] static T sc(auto &&x) {
+  return static_cast<T>(x);
+}
+
+template <typename T> [[nodiscard]] static T sz(auto &&x) {
+  return static_cast<T>(x.size());
+}
+#endif
+
+static void NO() { std::cout << "NO\n"; }
+
+static void YES() { std::cout << "YES\n"; }
+
+template <typename T> using vec = std::vector<T>;
+
+#define all(x) (x).begin(), (x).end()
+#define rall(x) (x).rbegin(), (x).rend()
+#define ff first
+#define ss second
+
+#ifdef LOCAL
+#define db(...) std::print(__VA_ARGS__)
+#define dbln(...) std::println(__VA_ARGS__)
+#else
+#define db(...)
+#define dbln(...)
+#endif
+//  }}}
+
+void solve() {
+  u32 n;
+  cin >> n;
+
+  vec<u32> a(n);
+  map<u32, u32> f;
+  for (auto &e : a) {
+    cin >> e;
+    ++f[e];
+  }
+
+  i32 l = 0, r = n / 2;
+
+  while (l <= r) {
+    i32 m = l + (r - l) / 2;
+
+    bool ok = false;
+    for (auto &[number, frequency] : f) {
+      if (frequency >= m) {
+        i32 rest = (i32)f.size() - (frequency == m);
+
+        if (rest >= m) {
+          ok = true;
+          break;
+        }
+      }
+    }
+
+    if (ok) {
+      l = m + 1;
+    } else {
+      r = m - 1;
+    }
+  }
+
+  println("{}", r);
+}
+
+int main() { // {{{
+  std::cin.exceptions(std::cin.failbit);
+
+#ifdef LOCAL
+  std::cerr.rdbuf(std::cout.rdbuf());
+  std::cout.setf(std::ios::unitbuf);
+  std::cerr.setf(std::ios::unitbuf);
+#else
+  std::cin.tie(nullptr)->sync_with_stdio(false);
+#endif
+
+  u32 tc = 1;
+  std::cin >> tc;
+
+  for (u32 t = 0; t < tc; ++t) {
+    solve();
+  }
+
+  return 0;
+}
+// }}}
+
diff --git a/codeforces/io/e.out b/codeforces/634/1335d.cc
similarity index 100%
rename from codeforces/io/e.out
rename to codeforces/634/1335d.cc
diff --git a/codeforces/634/1335e1.cc b/codeforces/634/1335e1.cc
new file mode 100644
index 0000000..30e08de
--- /dev/null
+++ b/codeforces/634/1335e1.cc
@@ -0,0 +1,88 @@
+#include <bits/stdc++.h> // {{{
+
+#include <version>
+#ifdef __cpp_lib_ranges_enumerate
+#include <ranges>
+namespace rv = std::views;
+namespace rs = std::ranges;
+#endif
+
+// https://codeforces.com/blog/entry/96344
+
+#pragma GCC optimize("O2,unroll-loops")
+#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
+
+using namespace std;
+
+using i32 = int32_t;
+using u32 = uint32_t;
+using i64 = int64_t;
+using u64 = uint64_t;
+using f64 = double;
+using f128 = long double;
+
+#if __cplusplus >= 202002L
+template <typename T> constexpr T MIN = std::numeric_limits<T>::min();
+
+template <typename T> constexpr T MAX = std::numeric_limits<T>::max();
+
+template <typename T> [[nodiscard]] static T sc(auto &&x) {
+  return static_cast<T>(x);
+}
+
+template <typename T> [[nodiscard]] static T sz(auto &&x) {
+  return static_cast<T>(x.size());
+}
+#endif
+
+static void NO() { std::cout << "NO\n"; }
+
+static void YES() { std::cout << "YES\n"; }
+
+template <typename T> using vec = std::vector<T>;
+
+#define all(x) (x).begin(), (x).end()
+#define rall(x) (x).rbegin(), (x).rend()
+#define ff first
+#define ss second
+
+#ifdef LOCAL
+#define db(...) std::print(__VA_ARGS__)
+#define dbln(...) std::println(__VA_ARGS__)
+#else
+#define db(...)
+#define dbln(...)
+#endif
+//  }}}
+
+void solve() {
+  u32 n;
+  cin >> n;
+  vec<u32> a(n);
+  for (auto &e : a)
+    cin >> e;
+
+  cout << "hi\n";
+}
+
+int main() { // {{{
+  std::cin.exceptions(std::cin.failbit);
+
+#ifdef LOCAL
+  std::cerr.rdbuf(std::cout.rdbuf());
+  std::cout.setf(std::ios::unitbuf);
+  std::cerr.setf(std::ios::unitbuf);
+#else
+  std::cin.tie(nullptr)->sync_with_stdio(false);
+#endif
+
+  u32 tc = 1;
+  std::cin >> tc;
+
+  for (u32 t = 0; t < tc; ++t) {
+    solve();
+  }
+
+  return 0;
+}
+// }}}
diff --git a/codeforces/634/1335e2.cc b/codeforces/634/1335e2.cc
new file mode 100644
index 0000000..c7f0f3d
--- /dev/null
+++ b/codeforces/634/1335e2.cc
@@ -0,0 +1,123 @@
+#include <bits/stdc++.h> // {{{
+
+#include <version>
+#ifdef __cpp_lib_ranges_enumerate
+#include <ranges>
+namespace rv = std::views;
+namespace rs = std::ranges;
+#endif
+
+// https://codeforces.com/blog/entry/96344
+
+#pragma GCC optimize("O2,unroll-loops")
+#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
+
+using namespace std;
+
+using i32 = int32_t;
+using u16 = uint16_t;
+using u32 = uint32_t;
+using i64 = int64_t;
+using u64 = uint64_t;
+using f64 = double;
+using f128 = long double;
+
+#if __cplusplus >= 202002L
+template <typename T> constexpr T MIN = std::numeric_limits<T>::min();
+
+template <typename T> constexpr T MAX = std::numeric_limits<T>::max();
+
+template <typename T> [[nodiscard]] static T sc(auto &&x) {
+  return static_cast<T>(x);
+}
+
+template <typename T> [[nodiscard]] static T sz(auto &&x) {
+  return static_cast<T>(x.size());
+}
+#endif
+
+static void NO() { std::cout << "NO\n"; }
+
+static void YES() { std::cout << "YES\n"; }
+
+template <typename T> using vec = std::vector<T>;
+
+#define all(x) (x).begin(), (x).end()
+#define rall(x) (x).rbegin(), (x).rend()
+#define ff first
+#define ss second
+
+#ifdef LOCAL
+#define db(...) std::print(__VA_ARGS__)
+#define dbln(...) std::println(__VA_ARGS__)
+#else
+#define db(...)
+#define dbln(...)
+#endif
+//  }}}
+
+void solve() {
+  u32 n;
+  cin >> n;
+
+  vec<u16> a(n);
+  for (auto &e : a)
+    cin >> e;
+
+  vec<vec<u32>> f(200 + 1);
+  vec<vec<u32>> pref(200 + 1, vec<u32>(n + 1, 0));
+
+  u32 ans = 0;
+
+  for (u32 i = 1; i <= n; ++i) {
+    f[a[i - 1]].push_back(i);
+
+    for (u32 x = 1; x <= 200; ++x) {
+      pref[x][i] = pref[x][i - 1];
+    }
+
+    ans = max(ans, ++pref[a[i - 1]][i]);
+  }
+
+  for (u16 x = 1; x <= 200; ++x) {
+    for (u32 A = 1; A <= f[x].size() / 2; ++A) {
+      i32 l = f[x][A - 1] + 1;
+      i32 r = f[x][f[x].size() - A] - 1;
+
+      if (l > r) {
+        continue;
+      }
+
+      u32 B = 0;
+      for (u16 y = 1; y <= 200; ++y) {
+        B = max(B, pref[y][r] - pref[y][l - 1]);
+      }
+
+      ans = max(ans, 2 * A + B);
+    }
+  }
+
+  println("{}", ans);
+}
+
+int main() { // {{{
+  std::cin.exceptions(std::cin.failbit);
+
+#ifdef LOCAL
+  std::cerr.rdbuf(std::cout.rdbuf());
+  std::cout.setf(std::ios::unitbuf);
+  std::cerr.setf(std::ios::unitbuf);
+#else
+  std::cin.tie(nullptr)->sync_with_stdio(false);
+#endif
+
+  u32 tc = 1;
+  std::cin >> tc;
+
+  for (u32 t = 0; t < tc; ++t) {
+    solve();
+  }
+
+  return 0;
+}
+// }}}
diff --git a/codeforces/634/1335f.cc b/codeforces/634/1335f.cc
new file mode 100644
index 0000000..6b0dd27
--- /dev/null
+++ b/codeforces/634/1335f.cc
@@ -0,0 +1,91 @@
+#include <bits/stdc++.h>  // {{{
+
+#include <version>
+#ifdef __cpp_lib_ranges_enumerate
+#include <ranges>
+namespace rv = std::views;
+namespace rs = std::ranges;
+#endif
+
+// https://codeforces.com/blog/entry/96344
+
+#pragma GCC optimize("O2,unroll-loops")
+#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
+
+using namespace std;
+
+using i32 = int32_t;
+using u32 = uint32_t;
+using i64 = int64_t;
+using u64 = uint64_t;
+using f64 = double;
+using f128 = long double;
+
+#if __cplusplus >= 202002L
+template <typename T>
+constexpr T MIN = std::numeric_limits<T>::min();
+
+template <typename T>
+constexpr T MAX = std::numeric_limits<T>::max();
+
+template <typename T>
+[[nodiscard]] static T sc(auto&& x) {
+  return static_cast<T>(x);
+}
+
+template <typename T>
+[[nodiscard]] static T sz(auto&& x) {
+  return static_cast<T>(x.size());
+}
+#endif
+
+static void NO() {
+  std::cout << "NO\n";
+}
+
+static void YES() {
+  std::cout << "YES\n";
+}
+
+template <typename T>
+using vec = std::vector<T>;
+
+#define all(x) (x).begin(), (x).end()
+#define rall(x) (x).rbegin(), (x).rend()
+#define ff first
+#define ss second
+
+#ifdef LOCAL
+#define db(...) std::print(__VA_ARGS__)
+#define dbln(...) std::println(__VA_ARGS__)
+#else
+#define db(...)
+#define dbln(...)
+#endif
+//  }}}
+
+void solve() {
+  
+}
+
+int main() {  // {{{
+  std::cin.exceptions(std::cin.failbit);
+
+#ifdef LOCAL
+  std::cerr.rdbuf(std::cout.rdbuf());
+  std::cout.setf(std::ios::unitbuf);
+  std::cerr.setf(std::ios::unitbuf);
+#else
+  std::cin.tie(nullptr)->sync_with_stdio(false);
+#endif
+
+  u32 tc = 1;
+  std::cin >> tc;
+
+  for (u32 t = 0; t < tc; ++t) {
+    solve();
+  }
+
+  return 0;
+}
+// }}}
diff --git a/codeforces/634/io/1068.1.cpin b/codeforces/634/io/1068.1.cpin
new file mode 100644
index 0000000..00750ed
--- /dev/null
+++ b/codeforces/634/io/1068.1.cpin
@@ -0,0 +1 @@
+3
diff --git a/codeforces/634/io/1068.1.cpout b/codeforces/634/io/1068.1.cpout
new file mode 100644
index 0000000..4c544cf
--- /dev/null
+++ b/codeforces/634/io/1068.1.cpout
@@ -0,0 +1 @@
+3 10 5 16 8 4 2 1
diff --git a/codeforces/634/io/1068.cpin b/codeforces/634/io/1068.cpin
new file mode 100644
index 0000000..00750ed
--- /dev/null
+++ b/codeforces/634/io/1068.cpin
@@ -0,0 +1 @@
+3
diff --git a/codeforces/634/io/1068.cpout b/codeforces/634/io/1068.cpout
new file mode 100644
index 0000000..05d4cd9
--- /dev/null
+++ b/codeforces/634/io/1068.cpout
@@ -0,0 +1,5 @@
+3
+[code]: 0
+[time]: 2.44 ms
+[debug]: false
+[ok]: false
diff --git a/codeforces/634/io/1068.expected b/codeforces/634/io/1068.expected
new file mode 100644
index 0000000..4c544cf
--- /dev/null
+++ b/codeforces/634/io/1068.expected
@@ -0,0 +1 @@
+3 10 5 16 8 4 2 1
diff --git a/codeforces/634/io/1069.1.cpin b/codeforces/634/io/1069.1.cpin
new file mode 100644
index 0000000..a6c74b2
--- /dev/null
+++ b/codeforces/634/io/1069.1.cpin
@@ -0,0 +1 @@
+ATTCGGGA
diff --git a/codeforces/634/io/1069.1.cpout b/codeforces/634/io/1069.1.cpout
new file mode 100644
index 0000000..00750ed
--- /dev/null
+++ b/codeforces/634/io/1069.1.cpout
@@ -0,0 +1 @@
+3
diff --git a/codeforces/634/io/1069.cpin b/codeforces/634/io/1069.cpin
new file mode 100644
index 0000000..a6c74b2
--- /dev/null
+++ b/codeforces/634/io/1069.cpin
@@ -0,0 +1 @@
+ATTCGGGA
diff --git a/codeforces/634/io/1069.cpout b/codeforces/634/io/1069.cpout
new file mode 100644
index 0000000..da0063d
--- /dev/null
+++ b/codeforces/634/io/1069.cpout
@@ -0,0 +1,4 @@
+
+[code]: 124 (TIMEOUT)
+[time]: 2001.50 ms
+[debug]: false
diff --git a/codeforces/634/io/1069.expected b/codeforces/634/io/1069.expected
new file mode 100644
index 0000000..00750ed
--- /dev/null
+++ b/codeforces/634/io/1069.expected
@@ -0,0 +1 @@
+3
diff --git a/codeforces/634/io/1335e1.1.cpin b/codeforces/634/io/1335e1.1.cpin
new file mode 100644
index 0000000..0f00747
--- /dev/null
+++ b/codeforces/634/io/1335e1.1.cpin
@@ -0,0 +1,13 @@
+6
+8
+1 1 2 2 3 2 1 1
+3
+1 3 3
+4
+1 10 10 1
+1
+26
+2
+2 1
+3
+1 1 1
diff --git a/codeforces/634/io/1335e1.1.cpout b/codeforces/634/io/1335e1.1.cpout
new file mode 100644
index 0000000..23acaef
--- /dev/null
+++ b/codeforces/634/io/1335e1.1.cpout
@@ -0,0 +1,6 @@
+7
+2
+4
+1
+1
+3
diff --git a/codeforces/634/io/1335e1.cpin b/codeforces/634/io/1335e1.cpin
new file mode 100644
index 0000000..0f00747
--- /dev/null
+++ b/codeforces/634/io/1335e1.cpin
@@ -0,0 +1,13 @@
+6
+8
+1 1 2 2 3 2 1 1
+3
+1 3 3
+4
+1 10 10 1
+1
+26
+2
+2 1
+3
+1 1 1
diff --git a/codeforces/634/io/1335e1.cpout b/codeforces/634/io/1335e1.cpout
new file mode 100644
index 0000000..3852d25
--- /dev/null
+++ b/codeforces/634/io/1335e1.cpout
@@ -0,0 +1,11 @@
+hi
+hi
+hi
+hi
+hi
+hi
+
+[code]: 0
+[time]: 4.03 ms
+[debug]: false
+[ok]: false
diff --git a/codeforces/634/io/1335e1.expected b/codeforces/634/io/1335e1.expected
new file mode 100644
index 0000000..23acaef
--- /dev/null
+++ b/codeforces/634/io/1335e1.expected
@@ -0,0 +1,6 @@
+7
+2
+4
+1
+1
+3
diff --git a/codeforces/634/io/1335e2.1.cpin b/codeforces/634/io/1335e2.1.cpin
new file mode 100644
index 0000000..0f00747
--- /dev/null
+++ b/codeforces/634/io/1335e2.1.cpin
@@ -0,0 +1,13 @@
+6
+8
+1 1 2 2 3 2 1 1
+3
+1 3 3
+4
+1 10 10 1
+1
+26
+2
+2 1
+3
+1 1 1
diff --git a/codeforces/634/io/1335e2.1.cpout b/codeforces/634/io/1335e2.1.cpout
new file mode 100644
index 0000000..23acaef
--- /dev/null
+++ b/codeforces/634/io/1335e2.1.cpout
@@ -0,0 +1,6 @@
+7
+2
+4
+1
+1
+3
diff --git a/codeforces/634/io/1335e2.cpin b/codeforces/634/io/1335e2.cpin
new file mode 100644
index 0000000..0f00747
--- /dev/null
+++ b/codeforces/634/io/1335e2.cpin
@@ -0,0 +1,13 @@
+6
+8
+1 1 2 2 3 2 1 1
+3
+1 3 3
+4
+1 10 10 1
+1
+26
+2
+2 1
+3
+1 1 1
diff --git a/codeforces/634/io/1335e2.cpout b/codeforces/634/io/1335e2.cpout
new file mode 100644
index 0000000..28082c2
--- /dev/null
+++ b/codeforces/634/io/1335e2.cpout
@@ -0,0 +1,11 @@
+7
+2
+4
+1
+1
+3
+
+[code]: 0
+[time]: 3.38 ms
+[debug]: false
+[ok]: true
diff --git a/codeforces/634/io/1335e2.expected b/codeforces/634/io/1335e2.expected
new file mode 100644
index 0000000..23acaef
--- /dev/null
+++ b/codeforces/634/io/1335e2.expected
@@ -0,0 +1,6 @@
+7
+2
+4
+1
+1
+3
diff --git a/codeforces/634/io/1933a.1.cpin b/codeforces/634/io/1933a.1.cpin
new file mode 100644
index 0000000..65b02a1
--- /dev/null
+++ b/codeforces/634/io/1933a.1.cpin
@@ -0,0 +1,17 @@
+8
+3
+-2 3 -3
+1
+0
+2
+0 1
+1
+-99
+4
+10 -2 -3 7
+5
+-1 -2 -3 -4 -5
+6
+-41 22 -69 73 -15 -50
+12
+1 2 3 4 5 6 7 8 9 10 11 12
diff --git a/codeforces/634/io/1933a.1.cpout b/codeforces/634/io/1933a.1.cpout
new file mode 100644
index 0000000..b878022
--- /dev/null
+++ b/codeforces/634/io/1933a.1.cpout
@@ -0,0 +1,8 @@
+8
+0
+1
+99
+22
+15
+270
+78
diff --git a/codeforces/634/io/1933a.cpin b/codeforces/634/io/1933a.cpin
new file mode 100644
index 0000000..65b02a1
--- /dev/null
+++ b/codeforces/634/io/1933a.cpin
@@ -0,0 +1,17 @@
+8
+3
+-2 3 -3
+1
+0
+2
+0 1
+1
+-99
+4
+10 -2 -3 7
+5
+-1 -2 -3 -4 -5
+6
+-41 22 -69 73 -15 -50
+12
+1 2 3 4 5 6 7 8 9 10 11 12
diff --git a/codeforces/634/io/1933a.cpout b/codeforces/634/io/1933a.cpout
new file mode 100644
index 0000000..14da5a5
--- /dev/null
+++ b/codeforces/634/io/1933a.cpout
@@ -0,0 +1,13 @@
+-2 3 -3 
+0 
+0 1 
+-99 
+10 -2 -3 7 
+-1 -2 -3 -4 -5 
+-41 22 -69 73 -15 -50 
+1 2 3 4 5 6 7 8 9 10 11 12 
+
+[code]: 0
+[time]: 2.65 ms
+[debug]: false
+[matches]: false
diff --git a/codeforces/634/io/1933a.expected b/codeforces/634/io/1933a.expected
new file mode 100644
index 0000000..b878022
--- /dev/null
+++ b/codeforces/634/io/1933a.expected
@@ -0,0 +1,8 @@
+8
+0
+1
+99
+22
+15
+270
+78
diff --git a/codeforces/634/io/abc042a.1.cpin b/codeforces/634/io/abc042a.1.cpin
new file mode 100644
index 0000000..959b81b
--- /dev/null
+++ b/codeforces/634/io/abc042a.1.cpin
@@ -0,0 +1 @@
+5 5 7
diff --git a/codeforces/634/io/abc042a.1.cpout b/codeforces/634/io/abc042a.1.cpout
new file mode 100644
index 0000000..f033a50
--- /dev/null
+++ b/codeforces/634/io/abc042a.1.cpout
@@ -0,0 +1 @@
+YES
diff --git a/codeforces/634/io/abc042a.2.cpin b/codeforces/634/io/abc042a.2.cpin
new file mode 100644
index 0000000..023b756
--- /dev/null
+++ b/codeforces/634/io/abc042a.2.cpin
@@ -0,0 +1 @@
+7 7 5
diff --git a/codeforces/634/io/abc042a.2.cpout b/codeforces/634/io/abc042a.2.cpout
new file mode 100644
index 0000000..5e35d1b
--- /dev/null
+++ b/codeforces/634/io/abc042a.2.cpout
@@ -0,0 +1 @@
+NO
diff --git a/codeforces/634/io/abc042a.cpin b/codeforces/634/io/abc042a.cpin
new file mode 100644
index 0000000..ad16ad6
--- /dev/null
+++ b/codeforces/634/io/abc042a.cpin
@@ -0,0 +1,3 @@
+2
+5 5 7
+7 7 5
diff --git a/codeforces/634/io/abc042a.cpout b/codeforces/634/io/abc042a.cpout
new file mode 100644
index 0000000..6e8bb3e
--- /dev/null
+++ b/codeforces/634/io/abc042a.cpout
@@ -0,0 +1,7 @@
+17
+19
+
+[code]: 0
+[time]: 2.68 ms
+[debug]: false
+[ok]: false
diff --git a/codeforces/634/io/abc042a.expected b/codeforces/634/io/abc042a.expected
new file mode 100644
index 0000000..823d3f6
--- /dev/null
+++ b/codeforces/634/io/abc042a.expected
@@ -0,0 +1,2 @@
+YES
+NO
diff --git a/codeforces/920/f b/codeforces/920/f
new file mode 100755
index 0000000..1c4d8bf
Binary files /dev/null and b/codeforces/920/f differ
diff --git a/codeforces/920/f.cc b/codeforces/920/f.cc
new file mode 100644
index 0000000..780fea3
--- /dev/null
+++ b/codeforces/920/f.cc
@@ -0,0 +1,112 @@
+#include <bits/stdc++.h>  // {{{
+
+#include <version>
+#ifdef __cpp_lib_ranges_enumerate
+#include <ranges>
+namespace rv = std::views;
+namespace rs = std::ranges;
+#endif
+
+// https://codeforces.com/blog/entry/96344
+
+#pragma GCC optimize("O2,unroll-loops")
+#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
+
+using namespace std;
+
+using i32 = int32_t;
+using u32 = uint32_t;
+using i64 = int64_t;
+using u64 = uint64_t;
+using f64 = double;
+using f128 = long double;
+
+#if __cplusplus >= 202002L
+template <typename T>
+constexpr T MIN = std::numeric_limits<T>::min();
+
+template <typename T>
+constexpr T MAX = std::numeric_limits<T>::max();
+
+template <typename T>
+[[nodiscard]] static T sc(auto&& x) {
+  return static_cast<T>(x);
+}
+
+template <typename T>
+[[nodiscard]] static T sz(auto&& x) {
+  return static_cast<T>(x.size());
+}
+#endif
+
+static void NO() {
+  std::cout << "NO\n";
+}
+
+static void YES() {
+  std::cout << "YES\n";
+}
+
+template <typename T>
+using vec = std::vector<T>;
+
+#define all(x) (x).begin(), (x).end()
+#define rall(x) (x).rbegin(), (x).rend()
+#define ff first
+#define ss second
+
+#ifdef LOCAL
+#define db(...) std::print(__VA_ARGS__)
+#define dbln(...) std::println(__VA_ARGS__)
+#else
+#define db(...)
+#define dbln(...)
+#endif
+//  }}}
+
+void solve() {
+  u32 n, q;
+  cin >> n >> q;
+
+  vec<i64> a(n);
+  for (auto& e : a)
+    cin >> e;
+
+  u32 block_size = sqrt(n);
+
+  u32 s, d, k;
+  for (u32 i = 0; i < q; ++i) {
+    cin >> s >> d >> k;
+
+    i64 ans = 0;
+    u32 index = s;
+    for (i64 i = 1; i <= k; ++i, index += d) {
+      ans += i * a[index - 1];
+    }
+
+    cout << ans << " \n"[i == q - 1];
+  }
+}
+
+int main() {  // {{{
+  std::cin.exceptions(std::cin.failbit);
+
+#ifdef LOCAL
+  std::cerr.rdbuf(std::cout.rdbuf());
+  std::cout.setf(std::ios::unitbuf);
+  std::cerr.setf(std::ios::unitbuf);
+#else
+  std::cin.tie(nullptr)->sync_with_stdio(false);
+#endif
+
+  u32 tc = 1;
+
+  std::cin >> tc;
+
+  for (u32 t = 0; t < tc; ++t) {
+    solve();
+  }
+
+  return 0;
+}
+// }}}
diff --git a/codeforces/920/io/f.expected b/codeforces/920/io/f.expected
new file mode 100644
index 0000000..61523db
--- /dev/null
+++ b/codeforces/920/io/f.expected
@@ -0,0 +1,5 @@
+5 1 3
+-600000000
+22 12 55
+600000000
+171 42 118 66 -108 23 2
diff --git a/codeforces/920/io/f.in b/codeforces/920/io/f.in
new file mode 100644
index 0000000..9acf609
--- /dev/null
+++ b/codeforces/920/io/f.in
@@ -0,0 +1,26 @@
+5
+3 3
+1 1 2
+1 2 2
+2 2 1
+1 1 2
+3 1
+-100000000 -100000000 -100000000
+1 1 3
+5 3
+1 2 3 4 5
+1 2 3
+2 3 2
+1 1 5
+3 1
+100000000 100000000 100000000
+1 1 3
+7 7
+34 87 5 42 -44 66 -32
+2 2 2
+4 3 1
+1 3 2
+6 2 1
+5 2 2
+2 5 2
+6 1 2
diff --git a/codeforces/920/io/f.out b/codeforces/920/io/f.out
new file mode 100644
index 0000000..52267eb
--- /dev/null
+++ b/codeforces/920/io/f.out
@@ -0,0 +1,10 @@
+5 1 3
+-600000000
+22 12 55
+600000000
+171 42 118 66 -108 23 2
+
+[code]: 0
+[time]: 2.93 ms
+[debug]: false
+[matches]: true
diff --git a/codeforces/920/solution.cc b/codeforces/920/solution.cc
new file mode 100644
index 0000000..6b0dd27
--- /dev/null
+++ b/codeforces/920/solution.cc
@@ -0,0 +1,91 @@
+#include <bits/stdc++.h>  // {{{
+
+#include <version>
+#ifdef __cpp_lib_ranges_enumerate
+#include <ranges>
+namespace rv = std::views;
+namespace rs = std::ranges;
+#endif
+
+// https://codeforces.com/blog/entry/96344
+
+#pragma GCC optimize("O2,unroll-loops")
+#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
+
+using namespace std;
+
+using i32 = int32_t;
+using u32 = uint32_t;
+using i64 = int64_t;
+using u64 = uint64_t;
+using f64 = double;
+using f128 = long double;
+
+#if __cplusplus >= 202002L
+template <typename T>
+constexpr T MIN = std::numeric_limits<T>::min();
+
+template <typename T>
+constexpr T MAX = std::numeric_limits<T>::max();
+
+template <typename T>
+[[nodiscard]] static T sc(auto&& x) {
+  return static_cast<T>(x);
+}
+
+template <typename T>
+[[nodiscard]] static T sz(auto&& x) {
+  return static_cast<T>(x.size());
+}
+#endif
+
+static void NO() {
+  std::cout << "NO\n";
+}
+
+static void YES() {
+  std::cout << "YES\n";
+}
+
+template <typename T>
+using vec = std::vector<T>;
+
+#define all(x) (x).begin(), (x).end()
+#define rall(x) (x).rbegin(), (x).rend()
+#define ff first
+#define ss second
+
+#ifdef LOCAL
+#define db(...) std::print(__VA_ARGS__)
+#define dbln(...) std::println(__VA_ARGS__)
+#else
+#define db(...)
+#define dbln(...)
+#endif
+//  }}}
+
+void solve() {
+  
+}
+
+int main() {  // {{{
+  std::cin.exceptions(std::cin.failbit);
+
+#ifdef LOCAL
+  std::cerr.rdbuf(std::cout.rdbuf());
+  std::cout.setf(std::ios::unitbuf);
+  std::cerr.setf(std::ios::unitbuf);
+#else
+  std::cin.tie(nullptr)->sync_with_stdio(false);
+#endif
+
+  u32 tc = 1;
+  std::cin >> tc;
+
+  for (u32 t = 0; t < tc; ++t) {
+    solve();
+  }
+
+  return 0;
+}
+// }}}
diff --git a/codeforces/962/f.cc b/codeforces/962/f.cc
new file mode 100644
index 0000000..4f7145c
--- /dev/null
+++ b/codeforces/962/f.cc
@@ -0,0 +1,148 @@
+#include <bits/stdc++.h>  // {{{
+
+#include <version>
+#ifdef __cpp_lib_ranges_enumerate
+#include <ranges>
+namespace rv = std::views;
+namespace rs = std::ranges;
+#endif
+
+// https://codeforces.com/blog/entry/96344
+
+#pragma GCC optimize("O2,unroll-loops")
+#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
+
+using namespace std;
+
+using i32 = int32_t;
+using u32 = uint32_t;
+using i64 = int64_t;
+using u64 = uint64_t;
+using f64 = double;
+using f128 = long double;
+
+#if __cplusplus >= 202002L
+template <typename T>
+constexpr T MIN = std::numeric_limits<T>::min();
+
+template <typename T>
+constexpr T MAX = std::numeric_limits<T>::max();
+
+template <typename T>
+[[nodiscard]] static T sc(auto&& x) {
+  return static_cast<T>(x);
+}
+
+template <typename T>
+[[nodiscard]] static T sz(auto&& x) {
+  return static_cast<T>(x.size());
+}
+#endif
+
+static void NO() {
+  std::cout << "NO\n";
+}
+
+static void YES() {
+  std::cout << "YES\n";
+}
+
+template <typename T>
+using vec = std::vector<T>;
+
+#define all(x) (x).begin(), (x).end()
+#define rall(x) (x).rbegin(), (x).rend()
+#define ff first
+#define ss second
+
+#ifdef LOCAL
+#define db(...) std::print(__VA_ARGS__)
+#define dbln(...) std::println(__VA_ARGS__)
+#else
+#define db(...)
+#define dbln(...)
+#endif
+//  }}}
+
+void solve() {
+  i64 n, k;
+  cin >> n >> k;
+  vector<i64> a(n), b(n);
+  for (auto& e : a)
+    cin >> e;
+  for (auto& e : b)
+    cin >> e;
+
+  i64 l = 0, r = *max_element(a.begin(), a.end());
+  vector<i64> last_a(n);
+  i64 ans = 0, operations = 0;
+
+  while (l <= r) {
+    i64 m = l + (r - l) / 2, s = 0, o = 0;
+
+    for (u32 i = 0; i < n; ++i) {
+      if (a[i] >= m) {
+        i64 O = (a[i] - m) / b[i] + 1;
+        s += O * a[i] - b[i] * O * (O - 1) / 2;
+        o += O;
+      }
+    }
+
+    if (o <= k) {
+      ans = s;
+      operations = o;
+      for (u32 i = 0; i < n; ++i) {
+        i64 O = (a[i] - m) / b[i] + 1;
+        if (a[i] >= m) {
+          last_a[i] = a[i] - O * b[i];
+        }
+      }
+      r = m - 1;
+    } else
+      l = m + 1;
+  }
+
+  auto brute_force = [&]() {
+    set<pair<i64, i64>> tree;
+    i64 ans = 0;
+    for (i64 i = 0; i < n; ++i)
+      if (last_a[i] > 0)
+        tree.emplace(last_a[i], i);
+    for (i64 _ = 0; _ < k && !tree.empty(); ++_) {
+      auto it = prev(tree.end());
+      auto [score, i] = *it;
+      tree.erase(it);
+      ans += score;
+      if (score > b[i])
+        tree.emplace(score - b[i], i);
+    }
+    return ans;
+  };
+
+  k -= operations;
+  if (k > 0)
+    ans += brute_force();
+  cout << ans << '\n';
+}
+
+int main() {  // {{{
+  std::cin.exceptions(std::cin.failbit);
+
+#ifdef LOCAL
+  std::cerr.rdbuf(std::cout.rdbuf());
+  std::cout.setf(std::ios::unitbuf);
+  std::cerr.setf(std::ios::unitbuf);
+#else
+  std::cin.tie(nullptr)->sync_with_stdio(false);
+#endif
+
+  u32 tc = 1;
+  std::cin >> tc;
+
+  for (u32 t = 0; t < tc; ++t) {
+    solve();
+  }
+
+  return 0;
+}
+// }}}
diff --git a/codeforces/962/io/f.expected b/codeforces/962/io/f.expected
new file mode 100644
index 0000000..7d97a58
--- /dev/null
+++ b/codeforces/962/io/f.expected
@@ -0,0 +1,5 @@
+21
+349
+27
+500000500000
+47
diff --git a/codeforces/962/io/f.in b/codeforces/962/io/f.in
new file mode 100644
index 0000000..7504599
--- /dev/null
+++ b/codeforces/962/io/f.in
@@ -0,0 +1,17 @@
+5
+3 4
+5 6 7
+2 3 4
+5 9
+32 52 68 64 14
+18 14 53 24 8
+5 1000
+1 2 3 4 5
+5 4 3 2 1
+1 1000000
+1000000
+1
+10 6
+3 3 5 10 6 8 6 8 7 7
+6 1 7 4 1 1 8 9 3 1
+
diff --git a/codeforces/962/io/f.out b/codeforces/962/io/f.out
new file mode 100644
index 0000000..faa4461
--- /dev/null
+++ b/codeforces/962/io/f.out
@@ -0,0 +1,10 @@
+21
+349
+27
+500000500000
+47
+
+[code]: 0
+[time]: 2.82 ms
+[debug]: false
+[matches]: false
diff --git a/codeforces/io/e.in b/codeforces/io/e.in
deleted file mode 100644
index aa82e59..0000000
--- a/codeforces/io/e.in
+++ /dev/null
@@ -1,13 +0,0 @@
-12
-6 5 2 2 5 3
-4 1 2 1 4 1
-1 4 1 3 1 1
-5 5 1 4 5 2
-4 4 1 1 4 4
-10 10 1 6 10 8
-10 10 2 6 10 7
-10 10 9 1 8 1
-10 10 8 1 10 2
-10 10 1 1 2 1
-10 10 1 3 4 1
-10 10 3 1 1 1