#462375 (C++17) No.1021 Children in Classrooms

• 問題: No.1021 Children in Classrooms
• ユーザー: noshi91
• 提出日時: 2020-04-10 23:08:39
• 言語: C++17 (gcc 12.3.0 + boost 1.83.0)
• 結果: AC
• 実行時間: 87 ms / 2,000 ms
• コード長: 3,407 bytes
• コンパイル時間: 758 ms
• コンパイル使用メモリ: 77,384 KB
• 実行使用メモリ: 5,376 KB
• 最終ジャッジ日時: 2024-09-15 23:56:39
• 合計ジャッジ時間: 2,853 ms
• ジャッジサーバーID （参考情報）: judge5 / judge3

入力	結果	実行時間; 実行使用メモリ
testcase_00	AC	2 ms; 5,248 KB
testcase_01	AC	2 ms; 5,376 KB
testcase_02	AC	2 ms; 5,376 KB
testcase_03	AC	2 ms; 5,376 KB
testcase_04	AC	3 ms; 5,376 KB
testcase_05	AC	2 ms; 5,376 KB
testcase_06	AC	3 ms; 5,376 KB
testcase_07	AC	3 ms; 5,376 KB
testcase_08	AC	3 ms; 5,376 KB
testcase_09	AC	84 ms; 5,376 KB
testcase_10	AC	83 ms; 5,376 KB
testcase_11	AC	83 ms; 5,376 KB
testcase_12	AC	82 ms; 5,376 KB
testcase_13	AC	82 ms; 5,376 KB
testcase_14	AC	82 ms; 5,376 KB
testcase_15	AC	64 ms; 5,376 KB
testcase_16	AC	64 ms; 5,376 KB
testcase_17	AC	66 ms; 5,376 KB
testcase_18	AC	87 ms; 5,376 KB
testcase_19	AC	14 ms; 5,376 KB

ソースコード

//#define NDEBUG
#include <algorithm>
#include <cstddef>
#include <cstdint>
#include <iostream>
#include <utility>
#include <vector>

namespace n91 {

using i8 = std::int_fast8_t;
using i32 = std::int_fast32_t;
using i64 = std::int_fast64_t;
using u8 = std::uint_fast8_t;
using u32 = std::uint_fast32_t;
using u64 = std::uint_fast64_t;
using isize = std::ptrdiff_t;
using usize = std::size_t;

struct rep {
  struct itr {
    usize i;
    constexpr itr(const usize i) noexcept : i(i) {}
    void operator++() noexcept { ++i; }
    constexpr usize operator*() const noexcept { return i; }
    constexpr bool operator!=(const itr x) const noexcept { return i != x.i; }
  };
  const itr f, l;
  constexpr rep(const usize f, const usize l) noexcept
      : f(std::min(f, l)), l(l) {}
  constexpr auto begin() const noexcept { return f; }
  constexpr auto end() const noexcept { return l; }
};
struct revrep {
  struct itr {
    usize i;
    constexpr itr(const usize i) noexcept : i(i) {}
    void operator++() noexcept { --i; }
    constexpr usize operator*() const noexcept { return i; }
    constexpr bool operator!=(const itr x) const noexcept { return i != x.i; }
  };
  const itr f, l;
  constexpr revrep(const usize f, const usize l) noexcept
      : f(l - 1), l(std::min(f, l) - 1) {}
  constexpr auto begin() const noexcept { return f; }
  constexpr auto end() const noexcept { return l; }
};
template <class T> auto md_vec(const usize n, const T &value) {
  return std::vector<T>(n, value);
}
template <class... Args> auto md_vec(const usize n, Args... args) {
  return std::vector<decltype(md_vec(args...))>(n, md_vec(args...));
}
template <class T> constexpr T difference(const T &a, const T &b) noexcept {
  return a < b ? b - a : a - b;
}
template <class T> void chmin(T &a, const T &b) noexcept {
  if (b < a)
    a = b;
}
template <class T> void chmax(T &a, const T &b) noexcept {
  if (a < b)
    a = b;
}
template <class F> class rec_lambda {
  F f;

public:
  rec_lambda(F &&f) : f(std::move(f)) {}
  template <class... Args> auto operator()(Args &&... args) const {
    return f(*this, std::forward<Args>(args)...);
  }
};
template <class F> auto make_rec(F &&f) { return rec_lambda<F>(std::move(f)); }
template <class T> T scan() {
  T ret;
  std::cin >> ret;
  return ret;
}
constexpr char eoln = '\n';

} // namespace n91

namespace n91 {

void main_() {
  /*
  std::ios::sync_with_stdio(false);
  std::cin.tie(nullptr);
  //*/
  const usize n = scan<usize>();
  const usize m = scan<usize>();
  std::vector<u32> a(n);
  isize l = 0, r = n - 1;
  for (auto &e : a) {
    std::cin >> e;
  }
  for (const usize i : rep(0, m)) {
    switch (scan<char>()) {
    case 'L': {
      if (l == n - 1) {
        continue;
      }
      if (0 <= l) {
        a[l + 1] += a[l];
        a[l] = 0;
      }
      l += 1;
      r += 1;
    } break;
    case 'R': {
      if (r == 0) {
        continue;
      }
      if (r < static_cast<isize>(n)) {
        a[r - 1] += a[r];
        a[r] = 0;
      }
      l -= 1;
      r -= 1;
    } break;
    }
  }
  for (const usize i : rep(0, n)) {
    const isize pos = l + static_cast<isize>(i);
    u32 ans;
    if (pos < 0 || static_cast<isize>(n) <= pos) {
      ans = 0;
    } else {
      ans = a[pos];
    }
    if (i)
      std::cout << " ";
    std::cout << ans;
  }
  std::cout << eoln;
}

} // namespace n91

int main() {
  n91::main_();
  return 0;
}