diff --git a/.gitignore b/.gitignore
index 1bbf0d0..a89a5ff 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@
 *.debug
 *.run
 *.su
+build
diff --git a/codeforces/944/.clang-format b/codeforces/944/.clang-format
new file mode 100644
index 0000000..e7350c4
--- /dev/null
+++ b/codeforces/944/.clang-format
@@ -0,0 +1,9 @@
+BasedOnStyle: Google
+AllowShortBlocksOnASingleLine: false
+AllowShortCaseLabelsOnASingleLine: false
+AllowShortCompoundRequirementOnASingleLine: false
+AllowShortEnumsOnASingleLine: false
+AllowShortFunctionsOnASingleLine: false
+AllowShortIfStatementsOnASingleLine: false
+AllowShortLambdasOnASingleLine: false
+AllowShortLoopsOnASingleLine: false
diff --git a/codeforces/944/.clangd b/codeforces/944/.clangd
new file mode 100644
index 0000000..4c67c32
--- /dev/null
+++ b/codeforces/944/.clangd
@@ -0,0 +1,27 @@
+CompileFlags:
+	Add:
+		- -std=c++20
+		- -Wall
+		- -Wextra
+		- -Wshadow
+		- -Wnon-virtual-dtor
+		- -Wold-style-cast
+		- -Wcast-align
+		- -Wunused
+		- -Woverloaded-virtual
+		- -Wpedantic
+		- -Wconversion
+		- -Wsign-conversion
+		- -Wmisleading-indentation
+		- -Wduplicated-cond
+		- -Wduplicated-branches
+		- -Wlogical-op
+		- -Wnull-dereference
+		- -Wuseless-cast
+		- -Wformat=2
+		- -Wformat-overflow
+		- -Wformat-truncation
+		- -Wdouble-promotion
+		- -Wundef
+		- -DLOCAL
+		- -Wno-unknown-pragmas
\ No newline at end of file
diff --git a/codeforces/944/a.cc b/codeforces/944/a.cc
new file mode 100644
index 0000000..1bc3fde
--- /dev/null
+++ b/codeforces/944/a.cc
@@ -0,0 +1,37 @@
+#include <bits/stdc++.h>  // {{{
+
+// 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;
+//  }}}
+
+void solve() {
+  i32 x, y;
+  cin >> x >> y;
+  cout << min(x, y) << ' ' << max(x, y) << '\n';
+}
+
+int main() {  // {{{
+  cin.tie(nullptr)->sync_with_stdio(false);
+  cin.exceptions(cin.failbit);
+
+  int tc = 1;
+  cin >> tc;
+
+  for (int t = 0; t < tc; ++t) {
+    solve();
+  }
+
+  return 0;
+}
+// }}}
diff --git a/codeforces/944/a.in b/codeforces/944/a.in
new file mode 100644
index 0000000..51d54a8
--- /dev/null
+++ b/codeforces/944/a.in
@@ -0,0 +1,11 @@
+10
+1 9
+8 4
+1 4
+3 4
+2 0
+2 4
+6 9
+3 3
+0 0
+9 9
diff --git a/codeforces/944/a.out b/codeforces/944/a.out
new file mode 100644
index 0000000..23a96c7
--- /dev/null
+++ b/codeforces/944/a.out
@@ -0,0 +1,12 @@
+1 9
+4 8
+1 4
+3 4
+0 2
+2 4
+6 9
+3 3
+0 0
+9 9
+
+[code]: 0
\ No newline at end of file
diff --git a/codeforces/944/b.cc b/codeforces/944/b.cc
new file mode 100644
index 0000000..7e0d9e6
--- /dev/null
+++ b/codeforces/944/b.cc
@@ -0,0 +1,44 @@
+#include <bits/stdc++.h>  // {{{
+
+// 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;
+//  }}}
+
+void solve() {
+  string s;
+  cin >> s;
+  for (u32 i = 1; i < s.size(); ++i) {
+    if (s[i] != s[0]) {
+      swap(s[i], s[0]);
+      cout << "YES\n" << s << '\n';
+      return;
+    }
+  }
+  cout << "NO\n";
+}
+
+int main() {  // {{{
+  cin.tie(nullptr)->sync_with_stdio(false);
+  cin.exceptions(cin.failbit);
+
+  int tc = 1;
+  cin >> tc;
+
+  for (int t = 0; t < tc; ++t) {
+    solve();
+  }
+
+  return 0;
+}
+// }}}
diff --git a/codeforces/944/b.in b/codeforces/944/b.in
new file mode 100644
index 0000000..8f6e0fa
--- /dev/null
+++ b/codeforces/944/b.in
@@ -0,0 +1,9 @@
+8
+codeforces
+aaaaa
+xxxxy
+co
+d
+nutdealer
+mwistht
+hhhhhhhhhh
diff --git a/codeforces/944/b.out b/codeforces/944/b.out
new file mode 100644
index 0000000..db6f11f
--- /dev/null
+++ b/codeforces/944/b.out
@@ -0,0 +1,15 @@
+YES
+ocdeforces
+NO
+YES
+yxxxx
+YES
+oc
+NO
+YES
+untdealer
+YES
+wmistht
+NO
+
+[code]: 0
\ No newline at end of file
diff --git a/codeforces/944/c.cc b/codeforces/944/c.cc
new file mode 100644
index 0000000..209604b
--- /dev/null
+++ b/codeforces/944/c.cc
@@ -0,0 +1,44 @@
+#include <bits/stdc++.h>  // {{{
+
+// 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;
+//  }}}
+
+void solve() {
+  u32 a, b, c, d;
+  cin >> a >> b >> c >> d;
+  i32 acc = 0;
+  for (u32 i = 1; i <= 12; ++i) {
+    if (i == a || i == b)
+      acc = (acc << 1) | 1;
+    else if (i == c || i == d)
+      acc <<= 1;
+  }
+  cout << ((acc == 0b1010 || acc == 0b0101) ? "YES" : "NO") << '\n';
+}
+
+int main() {  // {{{
+  cin.tie(nullptr)->sync_with_stdio(false);
+  cin.exceptions(cin.failbit);
+
+  int tc = 1;
+  cin >> tc;
+
+  for (int t = 0; t < tc; ++t) {
+    solve();
+  }
+
+  return 0;
+}
+// }}}
diff --git a/codeforces/944/c.in b/codeforces/944/c.in
new file mode 100644
index 0000000..aa7e165
--- /dev/null
+++ b/codeforces/944/c.in
@@ -0,0 +1,16 @@
+15
+2 9 10 6
+3 8 9 1
+1 2 3 4
+5 3 4 12
+1 8 2 10
+3 12 11 8
+9 10 12 1
+12 1 10 2
+3 12 6 9
+1 9 8 4
+6 7 9 12
+7 12 9 6
+10 12 11 1
+3 9 6 12
+1 4 3 5
diff --git a/codeforces/944/c.out b/codeforces/944/c.out
new file mode 100644
index 0000000..11cfba0
--- /dev/null
+++ b/codeforces/944/c.out
@@ -0,0 +1,17 @@
+YES
+NO
+NO
+YES
+YES
+NO
+NO
+NO
+NO
+NO
+NO
+YES
+YES
+YES
+YES
+
+[code]: 0
\ No newline at end of file
diff --git a/codeforces/944/compile_flags.txt b/codeforces/944/compile_flags.txt
new file mode 100644
index 0000000..6d76ca1
--- /dev/null
+++ b/codeforces/944/compile_flags.txt
@@ -0,0 +1,24 @@
+-std=c++20
+-Wall
+-Wextra
+-Wshadow
+-Wnon-virtual-dtor
+-Wold-style-cast
+-Wcast-align
+-Wunused
+-Woverloaded-virtual
+-Wpedantic
+-Wconversion
+-Wsign-conversion
+-Wmisleading-indentation
+-Wduplicated-cond
+-Wduplicated-branches
+-Wlogical-op
+-Wnull-dereference
+-Wuseless-cast
+-Wformat=2
+-Wformat-overflow
+-Wformat-truncation
+-Wdouble-promotion
+-Wundef
+-DLOCAL
diff --git a/codeforces/944/d.cc b/codeforces/944/d.cc
new file mode 100644
index 0000000..b4677f8
--- /dev/null
+++ b/codeforces/944/d.cc
@@ -0,0 +1,43 @@
+#include <bits/stdc++.h>  // {{{
+
+// 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;
+//  }}}
+
+void solve() {
+  string s;
+  cin >> s;
+  u32 ans = 0;
+  bool found = false;
+  for (u32 i = 0; i < s.size() - 1; ++i) {
+    ans += s[i] != s[i + 1];
+    found |= s[i] == '0' && s[i + 1] == '1';
+  }
+  cout << ans + 1 - found << '\n';
+}
+
+int main() {  // {{{
+  cin.tie(nullptr)->sync_with_stdio(false);
+  cin.exceptions(cin.failbit);
+
+  int tc = 1;
+  cin >> tc;
+
+  for (int t = 0; t < tc; ++t) {
+    solve();
+  }
+
+  return 0;
+}
+// }}}
diff --git a/codeforces/944/d.in b/codeforces/944/d.in
new file mode 100644
index 0000000..6836ffb
--- /dev/null
+++ b/codeforces/944/d.in
@@ -0,0 +1,7 @@
+6
+11010
+00000000
+1
+10
+0001111
+01010
diff --git a/codeforces/944/d.out b/codeforces/944/d.out
new file mode 100644
index 0000000..aad8f83
--- /dev/null
+++ b/codeforces/944/d.out
@@ -0,0 +1,8 @@
+3
+1
+1
+2
+1
+4
+
+[code]: 0
diff --git a/codeforces/944/e.cc b/codeforces/944/e.cc
new file mode 100644
index 0000000..30728f9
--- /dev/null
+++ b/codeforces/944/e.cc
@@ -0,0 +1,58 @@
+#include <bits/stdc++.h>  // {{{
+
+// 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;
+//  }}}
+
+void solve() {
+  u64 n;
+  u32 k, q;
+  cin >> n >> k >> q;
+  vector<u64> a(k + 1, 0), b(k + 1, 0);
+  for (u32 i = 0; i < k; ++i) {
+    cin >> a[i + 1];
+  }
+  for (u32 i = 0; i < k; ++i) {
+    cin >> b[i + 1];
+  }
+  u64 d;
+  while (q--) {
+    cin >> d;
+    auto it = lower_bound(a.begin(), a.end(), d);
+    u64 dist = distance(a.begin(), it);
+    u64 ans = b[dist];
+    if (d < *it) {
+      ans = b[dist - 1] +
+            (d - a[dist - 1]) * (b[dist] - b[dist - 1]) / (*it - *prev(it));
+    }
+    cout << ans << ' ';
+  }
+  cout << '\n';
+}
+
+int main() {  // {{{
+  cin.tie(nullptr)->sync_with_stdio(false);
+  cin.exceptions(cin.failbit);
+
+  int tc = 1;
+  cin >> tc;
+
+  for (int t = 0; t < tc; ++t) {
+    solve();
+  }
+
+  return 0;
+}
+// }}}
+
diff --git a/codeforces/944/e.in b/codeforces/944/e.in
new file mode 100644
index 0000000..3e91c5c
--- /dev/null
+++ b/codeforces/944/e.in
@@ -0,0 +1,24 @@
+4
+10 1 3
+10
+10
+0
+6
+7
+10 2 4
+4 10
+4 7
+6
+4
+2
+7
+1000000000 1 1
+1000000000
+1000000000
+99999999
+6 1 3
+6
+5
+2
+6
+5
diff --git a/codeforces/944/e.out b/codeforces/944/e.out
new file mode 100644
index 0000000..634f462
--- /dev/null
+++ b/codeforces/944/e.out
@@ -0,0 +1,6 @@
+0 6 7 
+5 4 2 5 
+99999999 
+1 5 4 
+
+[code]: 0
\ No newline at end of file
diff --git a/codeforces/944/makefile b/codeforces/944/makefile
new file mode 100644
index 0000000..e454976
--- /dev/null
+++ b/codeforces/944/makefile
@@ -0,0 +1,95 @@
+.PHONY: run debug clean setup init
+
+CXX = g++
+# lefticus.gitbooks.io/cpp-best-practice
+CXXFLAGS := -O2 -Wall -Wextra -Wpedantic -Wshadow -Wformat=2 \
+	-Wfloat-equal -Wlogical-op -Wshift-overflow=2 -Wnon-virtual-dtor \
+	-Wold-style-cast -Wcast-equal -Wuseless-cast -Wno-sign-promotion \
+	-Wcast-align -Wunused -Woverloaded-virtual -Wconversion \
+	-Wsign-conversion -Wmisleading-indentation -Wduplicated-cond \
+	-Wduplicated-branches -Wlogical-op -Wnull-dereference -Wformat=2 \
+	-Wformat-overflow -Wformat-truncation -Wdouble-promotion -Wundef \
+	-DLOCAL -std=c++20
+
+# https://interrupt.memfault.com/blog/best-and-worst-gcc-clang-compiler-flags
+DEBUG_CXX_FLAGS := -g3 -fsanitize=address,undefined \
+	-fsanitize=float-divide-by-zero -fsanitize=float-cast-overflow \
+	-fno-sanitize-recover=all -fstack-protector-all -fstack-usage \
+	-fno-omit-frame-pointer -fno-inline -ffunction-sections
+
+DEBUG_CXXFLAGS += -D_GLIBCXX_DEBUG -D_GLIBCXX_DEBUG_PEDANTIC
+
+SRC = $(word 2,$(MAKECMDGOALS))
+BASE = $(basename $(SRC))
+INPUT = $(BASE).in
+OUTPUT = $(BASE).out
+RUN_BIN = $(BASE).run
+DBG_BIN = $(BASE).debug
+
+TEMPLATE_DIR = ~/.config/cp-template
+
+.SILENT:
+
+run: $(RUN_BIN)
+	$(call execute_binary,$(RUN_BIN))
+
+debug: $(DBG_BIN)
+	$(call execute_binary,$(DBG_BIN))
+
+$(RUN_BIN): $(SRC)
+	test -f $@ && rm $@ || true
+	$(CXX) @compile_flags.txt $(SRC) -o $@ 2>$(OUTPUT); \
+	CODE=$$?; \
+	if [ $${CODE} -gt 0 ]; then \
+		printf '\n[code]: %s' $${CODE} >>$(OUTPUT); \
+		exit $${CODE}; \
+	else \
+		echo '' >$(OUTPUT); \
+	fi
+
+$(DBG_BIN): $(SRC)
+	test -f $@ && rm $@ || true
+	$(CXX) @compile_flags.txt $(DEBUG_CXX_FLAGS) $(SRC) -o $@ 2>$(OUTPUT); \
+	CODE=$$?; \
+	if [ $${CODE} -gt 0 ]; then \
+		printf '\n[code]: %s' $${CODE} >>$(OUTPUT); \
+		exit $${CODE}; \
+	else \
+		echo '' >$(OUTPUT); \
+	fi
+
+define execute_binary
+	timeout 2s ./$1 < $(INPUT) >$(OUTPUT) 2>&1; \
+	CODE=$$?; \
+	truncate -s $$(head -n 1000 $(OUTPUT) | wc -c) $(OUTPUT); \
+	if [ $${CODE} -ge 124 ]; then \
+		MSG=''; \
+		case $${CODE} in \
+			124) MSG='TIMEOUT';; \
+			128) MSG='SIGILL';; \
+			130) MSG='SIGABRT';; \
+			131) MSG='SIGBUS';; \
+			136) MSG='SIGFPE';; \
+			135) MSG='SIGSEGV';; \
+			137) MSG='SIGPIPE';; \
+			139) MSG='SIGTERM';; \
+		esac; \
+		[ -n "$${MSG}" ] && printf '\n[code]: %s (%s)' "$${CODE}" "$${MSG}" >>$(OUTPUT); \
+	else \
+		printf '\n[code]: %s' $${CODE} >>$(OUTPUT); \
+	fi
+endef
+
+clean:
+	find . -type f -name "*.run" -o -name "*.debug" -o -name "*.su" | xargs rm -f
+
+setup:
+	test -f compile_flags.txt || cp $(TEMPLATE_DIR)/compile_flags.txt .
+	test -f .clangd || cp $(TEMPLATE_DIR)/.clangd .
+	test -f .clang-format || cp $(TEMPLATE_DIR)/.clang-format .
+
+init:
+	make setup
+
+%:
+	@: