結果

問題 No.1135 RPN
ユーザー a01sa01to
提出日時 2024-10-08 00:28:45
言語 C++23
(gcc 15.2.0 + boost 1.89.0)
コンパイル:
g++-15 -O2 -lm -std=c++23 -Wuninitialized -DONLINE_JUDGE -o a.out _filename_
実行:
./a.out
結果
AC  
実行時間 2 ms / 2,000 ms
コード長 929 bytes
記録
記録タグの例:
初AC ショートコード 純ショートコード 純主流ショートコード 最速実行時間
コンパイル時間 2,863 ms
コンパイル使用メモリ 337,892 KB
実行使用メモリ 7,972 KB
最終ジャッジ日時 2026-04-24 10:02:01
合計ジャッジ時間 5,004 ms
ジャッジサーバーID
（参考情報） 		<nil> / judge3_1
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 3
other AC * 16
権限があれば一括ダウンロードができます
コンパイルメッセージ
In file included from /home/linuxbrew/.linuxbrew/Cellar/gcc/15.2.0_1/include/c++/15/x86_64-pc-linux-gnu/bits/c++allocator.h:33,
                 from /home/linuxbrew/.linuxbrew/Cellar/gcc/15.2.0_1/include/c++/15/bits/allocator.h:46,
                 from /home/linuxbrew/.linuxbrew/Cellar/gcc/15.2.0_1/include/c++/15/string:45,
                 from /home/linuxbrew/.linuxbrew/Cellar/gcc/15.2.0_1/include/c++/15/bitset:54,
                 from /home/linuxbrew/.linuxbrew/Cellar/gcc/15.2.0_1/include/c++/15/x86_64-pc-linux-gnu/bits/stdc++.h:54,
                 from main.cpp:1:
In member function 'void std::__new_allocator<_Tp>::deallocate(_Tp*, size_type) [with _Tp = char]',
    inlined from 'constexpr void std::allocator< <template-parameter-1-1> >::deallocate(_Tp*, std::size_t) [with _Tp = char]' at /home/linuxbrew/.linuxbrew/Cellar/gcc/15.2.0_1/include/c++/15/bits/allocator.h:215:35,
    inlined from 'static constexpr void std::allocator_traits<std::allocator<_CharT> >::deallocate(allocator_type&, pointer, size_type) [with _Tp = char]' at /home/linuxbrew/.linuxbrew/Cellar/gcc/15.2.0_1/include/c++/15/bits/alloc_traits.h:649:23,
    inlined from 'constexpr void std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::_M_destroy(size_type) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]' at /home/linuxbrew/.linuxbrew/Cellar/gcc/15.2.0_1/include/c++/15/bits/basic_string.h:305:34,
    inlined from 'constexpr void std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::_M_dispose() [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]' at /home/linuxbrew/.linuxbrew/Cellar/gcc/15.2.0_1/include/c++/15/bits/basic_string.h:299:14,
    inlined from 'constexpr std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::~basic_string() [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]' at /home/linuxbrew/.linuxbrew/Cellar/gcc/15.2.0_1/include/c++/15/bits/basic_string.h:896:19,
    inlined f

ソースコード

diff #
raw source code 

#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
  #include "settings/debug.cpp"
#else
  #define Debug(...) void(0)
#endif
#define rep(i, n) for (int i = 0; i < (n); ++i)
using ll = long long;
using ull = unsigned long long;

inline bool is_digit(string s) {
  return all_of(s.begin(), s.end(), ::isdigit);
}

int main() {
  int n;
  cin >> n;
  vector<string> s(n);
  rep(i, n) cin >> s[i];
  vector<int> q;
  rep(i, n) {
    if (is_digit(s[i])) q.push_back(stoi(s[i]));
    else {
      if (s[i] == "+") {
        int a = q.back();
        q.pop_back();
        int b = q.back();
        q.pop_back();
        q.push_back(a + b);
      }
      else if (s[i] == "-") {
        int a = q.back();
        q.pop_back();
        int b = q.back();
        q.pop_back();
        q.push_back(b - a);
      }
      else {
        assert(false);
      }
    }
  }
  assert(q.size() == 1);
  cout << q[0] << endl;
  return 0;
}
0