some more problems

codeforces/923/a.cc

@@ -92,7 +92,18 @@ void NO() {
 static constexpr int MOD = 1e9 + 7;
 
 void solve() {
-  println("HI");
+  int n;
+  string s;
+  cin >> n;
+  cin >> s;
+  int l = -1, r;
+  for (int i = 0; i < n; ++i) {
+    if (s[i] == 'B') {
+      if (l == -1) l = i;
+      r = i;
+    }
+  }
+  cout << r - l + 1 << '\n';
 }
 
 int main() {

codeforces/946/.clang-format

@@ -1,9 +1,4 @@
 BasedOnStyle: Google
-AllowShortBlocksOnASingleLine: false
+IndentWidth: 2
-AllowShortCaseLabelsOnASingleLine: false
+ColumnLimit: 100
-AllowShortCompoundRequirementOnASingleLine: false
+PointerAlignment: Left
-AllowShortEnumsOnASingleLine: false
-AllowShortFunctionsOnASingleLine: false
-AllowShortIfStatementsOnASingleLine: false
-AllowShortLambdasOnASingleLine: false
-AllowShortLoopsOnASingleLine: false

codeforces/946/.clangd

@@ -1,37 +0,0 @@
-CompileFlags:
-	Add:
-		-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
-		-Wno-unknown-pragmas
--e 		-std=c++23
--e 		-std=c++23
--e 		-std=c++23
--e 		-std=c++23

codeforces/946/a.cc

@@ -1,91 +0,0 @@
-#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;
-}
-// }}}

codeforces/946/compile_flags.txt

@@ -1,31 +0,0 @@
--pedantic-errors
--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
--Wmisleading-indentation
--Wduplicated-cond
--Wduplicated-branches
--Wlogical-op
--Wnull-dereference
--Wformat=2
--Wformat-overflow
--Wformat-truncation
--Wdouble-promotion
--Wundef
--DLOCAL
--std=c++23

codeforces/946/debug_flags.txt

@@ -1,14 +0,0 @@
--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
--DLOCAL
--std=c++23

codeforces/946/makefile

@@ -1,30 +0,0 @@
-.PHONY: run debug clean setup init
-
-VERSION ?= 20
-
-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 .clang-format || cp $(HOME)/.config/cp-template/.clang-format .
-	test -f compile_flags.txt || cp $(HOME)/.config/cp-template/compile_flags.txt . && echo -std=c++$(VERSION) >>compile_flags.txt
-	test -f .clangd || cp $(HOME)/.config/cp-template/.clangd . && echo -e "\t\t-std=c++$(VERSION)" >>.clangd
-
-init:
-	make setup
-
-%:
-	@:

codeforces/946/scripts/debug.sh

@@ -1,29 +0,0 @@
-#!/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" true
-exit $?

codeforces/946/scripts/run.sh

@@ -1,29 +0,0 @@
-#!/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 $?

codeforces/946/scripts/utils.sh

@@ -1,61 +0,0 @@
-#!/bin/sh
-
-execute_binary() {
-  binary="$1"
-  input="$2"
-  output="$3"
-  is_debug="$4"
-
-  start=$(date '+%s.%N')
-  if [ -n "$is_debug" ]; then
-    asan="$(ldconfig -p | grep libasan.so | head -n1 | awk '{print $4}')"
-    LD_PRELOAD="$asan" timeout 2s ./"$binary" <"$input" >"$output" 2>&1
-  else
-    timeout 2s ./"$binary" <"$input" >"$output" 2>&1
-  fi
-  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
-  test -n "$is_debug" && is_debug_string=true || is_debug_string=false
-  printf '\n[debug]: %s' "$is_debug_string" >>$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
-}