feat: usaco

codeforces/1003/c.cc

@@ -76,13 +76,9 @@ void solve() {
 
   a[0] = min(a[0], x - a[0]);
   for (int i = 1; i < n; ++i) {
-    if (a[i] >= a[i - 1] && x - a[i] >= a[i - 1]) {
+    if (x - a[i] >= a[i - 1]) {
       a[i] = min(a[i], x - a[i]);
-    } else if (a[i] >= a[i - 1]) {
+    } else if (a[i] < a[i - 1]) {
-      ;
-    } else if (x - a[i] >= a[i - 1]) {
-      a[i] = x - a[i];
-    } else {
       prln("NO");
       return;
     }

codeforces/1020/f.cc

@@ -0,0 +1,93 @@
+#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 d64 = double;
+using d128 = long double;
+template <typename T>
+using vec = std::vector<T>;
+template <typename T, size_t N>
+using arr = std::array<T, N>;
+template <typename T1, typename T2>
+using pai = std::pair<T1, T2>;
+
+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());
+}
+
+static void NO() {
+  std::cout << "NO\n";
+}
+
+static void YES() {
+  std::cout << "YES\n";
+}
+
+#define all(x) (x).begin(), (x).end()
+#define rall(x) (x).rbegin(), (x).rend()
+
+#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;
+
+  string s;
+  cin >> s;
+
+  // NOTE: thought could loop thru the entire thing
+  // knew memory was O(n^2), but didn't actually say:
+  // ok what do i want to do - loop thru. this is impractical
+  string prev(n, '1');
+  // union_find<u64> uf;
+  for (u32 i = 0; i < n; ++i) {
+    if (i)
+      s[i] = ('0' + 1 - (s[i] - '0'));
+    s[i] = ('0' + 1 - (s[i] - '0'));
+    cout << "i: " << i << endl;
+    cout << s << endl;
+  }
+}
+
+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;
+}
+// }}}

codeforces/1020/io/f.in

@@ -0,0 +1,13 @@
+6
+3
+000
+4
+0010
+7
+1011001
+4
+0001
+2
+11
+1
+0

codeforces/1020/io/f.out

@@ -0,0 +1,24 @@
+100
+010
+001
+1010
+0110
+0000
+0011
+0011001
+1111001
+1001001
+1010001
+1011101
+1011011
+1011000
+1001
+0101
+0011
+0000
+01
+10
+1
+
+[code]: 0
+[time]: 4.11367 ms

usaco/blocks.cc

@@ -1,48 +0,0 @@
-#include <bits/stdc++.h>
-using namespace std;
-
-#define all(x) (x).begin(), (x).end()
-#define sz(x) static_cast<int>((x).size())
-#define FOR(x) for (size_t i = 0; i < (x).size(); ++i)
-
-#ifndef LOCAL
-#define dbg(x) cerr << #x << " = " << (x) << '\n'
-#else
-#define dbg(x)
-#endif
-
-#define PROBLEM_NAME "blocks"
-
-void solve() {
-  int N;
-    cin >> N;
-    vector<int> ans(26, 0);
-
-    for(int i = 0; i < N; ++i) {
-        string left, right;
-        cin >> left >> right;
-        vector<int> count_left(26, 0);
-        for(char c : left) count_left[c - 'a']++;
-        vector<int> count_right(26, 0);
-        for(char c : right) count_right[c - 'a']++;
-        for(int j = 0; j < 26; ++j) {
-            ans[j] += max(count_left[j], count_right[j]);
-        }
-    }
-
-    for(int count : ans) {
-        cout << count << '\n';
-    }
-}
-
-int main() {
-  ios::sync_with_stdio(false);
-  cin.tie(nullptr);
-
-  freopen(PROBLEM_NAME ".in", "r", stdin);
-  freopen(PROBLEM_NAME ".out", "w", stdout);
-
-  solve();
-
-  return 0;
-}

usaco/blocks.in

@@ -1,4 +0,0 @@
-3
-fox box
-dog cat
-car bus

usaco/blocks.out

@@ -1,26 +0,0 @@
-2
-2
-2
-1
-0
-1
-1
-0
-0
-0
-0
-0
-0
-0
-2
-0
-0
-1
-1
-1
-1
-0
-0
-1
-0
-0

usaco/bronze/.clang-format

@@ -0,0 +1,9 @@
+BasedOnStyle: Google
+AllowShortBlocksOnASingleLine: false
+AllowShortCaseLabelsOnASingleLine: false
+AllowShortCompoundRequirementOnASingleLine: false
+AllowShortEnumsOnASingleLine: false
+AllowShortFunctionsOnASingleLine: false
+AllowShortIfStatementsOnASingleLine: false
+AllowShortLambdasOnASingleLine: false
+AllowShortLoopsOnASingleLine: false

usaco/bronze/compile_flags.txt

@@ -0,0 +1,30 @@
+-O2
+-Wall
+-Wextra
+-Wpedantic
+-Wshadow
+-Wformat=2
+-Wfloat-equal
+-Wlogical-op
+-Wshift-overflow=2
+-Wnon-virtual-dtor
+-Wold-style-cast
+-Wcast-qual
+-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

usaco/bronze/debug_flags.txt

@@ -0,0 +1,12 @@
+-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
+-D_GLIBCXX_DEBUG
+-D_GLIBCXX_DEBUG_PEDANTIC

usaco/bronze/io/mixmilk.in

@@ -0,0 +1,3 @@
+10 3
+11 4
+12 5

usaco/bronze/io/mixmilk.out

@@ -0,0 +1,6 @@
+0
+10
+2
+
+[code]: 0
+[time]: 4.47321 ms

usaco/bronze/io/rut.in

@@ -0,0 +1,7 @@
+6
+E 3 5
+N 5 3
+E 4 6
+E 10 4
+N 11 2
+N 8 1

usaco/bronze/io/rut.out

@@ -0,0 +1,9 @@
+5
+3
+Infinity
+Infinity
+2
+5
+
+[code]: 0
+[time]: 11.8356 ms

usaco/bronze/io/shell-game.in

@@ -0,0 +1,4 @@
+3
+1 2 1
+3 2 1
+1 3 1

usaco/bronze/io/shell-game.out

@@ -0,0 +1,4 @@
+2
+
+[code]: 0
+[time]: 5.1527 ms

usaco/bronze/io/speeding.in

@@ -0,0 +1,7 @@
+3 3
+40 75
+50 35
+10 45
+40 76
+20 30
+40 40

usaco/bronze/io/speeding.out

@@ -0,0 +1,4 @@
+5
+
+[code]: 0
+[time]: 4.50397 ms

usaco/bronze/makefile

@@ -0,0 +1,27 @@
+.PHONY: run debug clean setup init
+
+SRC = $(word 2,$(MAKECMDGOALS))
+
+.SILENT:
+
+run:
+	sh scripts/run.sh $(SRC)
+
+debug:
+	sh scripts/debug.sh $(SRC)
+
+clean:
+	rm -rf build/*
+
+setup:
+	test -d build || mkdir -p build
+	test -d io || mkdir -p io
+	test -d scripts || mkdir -p scripts
+	test -f compile_flags.txt || cp $(HOME)/.config/cp-template/compile_flags.txt .
+	test -f .clang-format || cp $(HOME)/.config/cp-template/.clang-format .
+
+init:
+	make setup
+
+%:
+	@:

usaco/bronze/mixmilk.cc

@@ -0,0 +1,90 @@
+#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;
+
+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());
+}
+
+static void NO() {
+  std::cout << "NO\n";
+}
+
+static void YES() {
+  std::cout << "YES\n";
+}
+
+#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() {
+  vector<u64> c(3), m(3);
+  for (u32 i = 0; i < 3; ++i) {
+    cin >> c[i] >> m[i];
+  }
+
+  for (u32 i = 0; i < 100; ++i) {
+    u64 pour = min(m[i % 3], c[(i + 1) % 3] - m[(i + 1) % 3]);
+    m[i % 3] -= pour;
+    m[(i + 1) % 3] += pour;
+  }
+
+  for (u32 i = 0; i < 3; ++i) {
+    cout << m[i] << '\n';
+  }
+}
+
+int main() {  // {{{
+  cin.tie(nullptr)->sync_with_stdio(false);
+  cin.exceptions(cin.failbit);
+
+#define PROBLEM_NAME "mixmilk"
+
+#ifdef LOCAL
+  freopen("io/" PROBLEM_NAME ".in", "r", stdin);
+  freopen("io/" PROBLEM_NAME ".out", "w", stdout);
+#else
+  freopen(PROBLEM_NAME ".in", "r", stdin);
+  freopen(PROBLEM_NAME ".out", "w", stdout);
+#endif
+
+  solve();
+
+  return 0;
+}
+// }}}

usaco/bronze/rut.cc

@@ -0,0 +1,112 @@
+#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;
+
+template <typename T>
+constexpr T MIN = std::numeric_limits<T>::min();
+
+template <typename T>
+constexpr T MAX = std::numeric_limits<T>::max();
+
+#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
+//  }}}
+
+struct Cow {
+  u32 i;
+  i64 x, y;
+};
+
+void solve() {
+  u32 n;
+  cin >> n;
+
+  vector<Cow> east_cows, north_cows;
+  vector<i64> ans(n, -1);
+
+  char dir;
+  i64 x, y;
+  for (u32 i = 0; i < n; ++i) {
+    cin >> dir >> x >> y;
+
+    Cow cow{i, x, y};
+    if (dir == 'E') {
+      east_cows.emplace_back(cow);
+    } else {
+      north_cows.emplace_back(cow);
+    }
+  }
+
+  sort(all(east_cows), [](auto const& c1, auto const& c2) {
+    return c1.y < c2.y;
+  });
+  sort(all(north_cows), [](auto const& c1, auto const& c2) {
+    return c1.x < c2.x;
+  });
+
+  for (auto& nc : north_cows) {
+    for (auto& ec : east_cows) {
+      if (ec.x > nc.x || nc.y >= ec.y || ans[ec.i] != -1)
+        continue;
+
+      auto et = nc.x - ec.x;
+      auto nt = ec.y - nc.y;
+
+      if (nt < et) {
+        ans[ec.i] = et;
+      }
+      if (et < nt) {
+        ans[nc.i] = nt;
+        break;
+      }
+    }
+  }
+
+  for (auto& e : ans) {
+    if (e == -1) {
+      cout << "Infinity";
+    } else {
+      cout << e;
+    }
+    cout << '\n';
+  }
+}
+
+int main() {  // {{{
+  cin.tie(nullptr)->sync_with_stdio(false);
+  cin.exceptions(cin.failbit);
+
+#define PROBLEM_NAME "rut"
+
+#ifdef LOCAL
+  freopen("io/" PROBLEM_NAME ".in", "r", stdin);
+  freopen("io/" PROBLEM_NAME ".out", "w", stdout);
+#endif
+
+  solve();
+
+  return 0;
+}
+// }}}

usaco/bronze/scripts/debug.sh

@@ -0,0 +1,29 @@
+#!/bin/sh
+
+. ./scripts/utils.sh
+
+SRC="$1"
+BASE=$(basename "$SRC" .cc)
+INPUT="${BASE}.in"
+OUTPUT="${BASE}.out"
+DBG_BIN="${BASE}.debug"
+
+test -d build || mkdir -p build
+test -d io || mkdir -p io
+
+test -f "$INPUT" && test ! -f "io/$INPUT" && mv "$INPUT" "io/"
+test -f "$OUTPUT" && test ! -f "io/$OUTPUT" && mv "$OUTPUT" "io/"
+
+test -f "io/$INPUT" || touch "io/$INPUT"
+test -f "io/$OUTPUT" || touch "io/$OUTPUT"
+
+INPUT="io/$INPUT"
+OUTPUT="io/$OUTPUT"
+DBG_BIN="build/$DBG_BIN"
+
+compile_source "$SRC" "$DBG_BIN" "$OUTPUT" @debug_flags.txt
+CODE=$?
+test $CODE -gt 0 && exit $CODE
+
+execute_binary "$DBG_BIN" "$INPUT" "$OUTPUT"
+exit $?

usaco/bronze/scripts/run.sh

@@ -0,0 +1,29 @@
+#!/bin/sh
+
+. ./scripts/utils.sh
+
+SRC="$1"
+BASE=$(basename "$SRC" .cc)
+INPUT="${BASE}.in"
+OUTPUT="${BASE}.out"
+RUN_BIN="${BASE}.run"
+
+test -d build || mkdir -p build
+test -d io || mkdir -p io
+
+test -f "$INPUT" && test ! -f "io/$INPUT" && mv "$INPUT" "io/"
+test -f "$OUTPUT" && test ! -f "io/$OUTPUT" && mv "$OUTPUT" "io/"
+
+test -f "io/$INPUT" || touch "io/$INPUT"
+test -f "io/$OUTPUT" || touch "io/$OUTPUT"
+
+INPUT="io/$INPUT"
+OUTPUT="io/$OUTPUT"
+RUN_BIN="build/$RUN_BIN"
+
+compile_source "$SRC" "$RUN_BIN" "$OUTPUT" ""
+CODE=$?
+test $CODE -gt 0 && exit $CODE
+
+execute_binary "$RUN_BIN" "$INPUT" "$OUTPUT"
+exit $?

usaco/bronze/scripts/utils.sh

@@ -0,0 +1,53 @@
+#!/bin/sh
+
+execute_binary() {
+  binary="$1"
+  input="$2"
+  output="$3"
+
+  start=$(date '+%s.%N')
+  timeout 2s ./"$binary" <"$input" >"$output" 2>&1
+  CODE=$?
+  end=$(date '+%s.%N')
+  truncate -s "$(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
+    [ $CODE -ne 124 ] && sed -i '$d' "$output"
+    test -n "$MSG" && printf '\n[code]: %s (%s)' "$CODE" "$MSG" >>"$output"
+  else
+    printf '\n[code]: %s' "$CODE" >>"$output"
+  fi
+
+  printf '\n[time]: %s ms' "$(awk "BEGIN {print ($end - $start) * 1000}")" >>$output
+  return $CODE
+}
+
+compile_source() {
+  src="$1"
+  bin="$2"
+  output="$3"
+  flags="$4"
+
+  test -f "$bin" && rm "$bin" || true
+  g++ @compile_flags.txt $flags "$src" -o "$bin" 2>"$output"
+  CODE=$?
+
+  if [ $CODE -gt 0 ]; then
+    printf '\n[code]: %s' "$CODE" >>"$output"
+    return $CODE
+  else
+    echo '' >"$output"
+    return 0
+  fi
+}

usaco/bronze/shell.cc

@@ -0,0 +1,97 @@
+#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;
+
+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());
+}
+
+static void NO() {
+  std::cout << "NO\n";
+}
+
+static void YES() {
+  std::cout << "YES\n";
+}
+
+#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() {
+  vector<u32> shell_locs(3), shell_counts(3, 0);
+  iota(all(shell_locs), 0);
+
+  u32 n, a, b, g;
+  cin >> n;
+  for (u32 i = 0; i < n; ++i) {
+    cin >> a >> b >> g;
+
+    --a;
+    --b;
+    --g;
+    for (u32 j = 0; j < shell_locs.size(); ++j) {
+      if (shell_locs[j] == a)
+        shell_locs[j] = b;
+      else if (shell_locs[j] == b)
+        shell_locs[j] = a;
+      shell_counts[j] += shell_locs[j] == g;
+    }
+  }
+
+  cout << *max_element(all(shell_counts)) << '\n';
+}
+
+int main() {  // {{{
+  cin.tie(nullptr)->sync_with_stdio(false);
+  cin.exceptions(cin.failbit);
+
+#define PROBLEM_NAME "shell"
+
+#ifdef LOCAL
+  freopen("io/" PROBLEM_NAME ".in", "r", stdin);
+  freopen("io/" PROBLEM_NAME ".out", "w", stdout);
+#else
+  freopen(PROBLEM_NAME ".in", "r", stdin);
+  freopen(PROBLEM_NAME ".out", "w", stdout);
+#endif
+
+  solve();
+
+  return 0;
+}
+// }}}

usaco/bronze/speeding.cc

@@ -0,0 +1,106 @@
+#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;
+
+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());
+}
+
+static void NO() {
+  std::cout << "NO\n";
+}
+
+static void YES() {
+  std::cout << "YES\n";
+}
+
+#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() {
+  i32 n, m;
+  cin >> n >> m;
+
+  vector<pair<i32, i32>> limit(n), cow(m);
+  for (u32 i = 0; i < n; ++i) {
+    cin >> limit[i].ff >> limit[i].ss;
+    if (i)
+      limit[i].ff += limit[i - 1].ff;
+  }
+  for (u32 i = 0; i < m; ++i) {
+    cin >> cow[i].ff >> cow[i].ss;
+    if (i)
+      cow[i].ff += cow[i - 1].ff;
+  }
+
+  i32 i = -1, j = -1;
+
+  i32 ans = 0;
+  while (j < m) {
+    if (i == -1) {
+      ++i;
+      ++j;
+    } else if (i + 1 < n && limit[i + 1].ff <= cow[j].ff) {
+      ++i;
+    } else {
+      ++j;
+    }
+    ans = max(ans, cow[j].ss - limit[i].ss);
+  }
+  cout << ans << '\n';
+}
+
+int main() {  // {{{
+  cin.tie(nullptr)->sync_with_stdio(false);
+  cin.exceptions(cin.failbit);
+
+#define PROBLEM_NAME "speeding"
+
+#ifdef LOCAL
+  freopen("io/" PROBLEM_NAME ".in", "r", stdin);
+  freopen("io/" PROBLEM_NAME ".out", "w", stdout);
+#else
+  freopen(PROBLEM_NAME ".in", "r", stdin);
+  freopen(PROBLEM_NAME ".out", "w", stdout);
+#endif
+
+  solve();
+
+  return 0;
+}
+// }}}