提出 #73613917

ソースコード 拡げる

#include <bits/stdc++.h>

#ifdef LOCAL
#include <library/my_library/utility/debug.hpp>
#else
#define debug(...)
#endif

using namespace std;
namespace rv = std::views;  // NOLINT

// clang-format off
using lint = long long;
#define ALL(a) (a).begin(), (a).end()

template <class T> inline bool chmin(T &a, T b) { if (a > b) { a = b; return true; } return false; }
template <class T> inline bool chmax(T &a, T b) { if (a < b) { a = b; return true; } return false; }
inline void Yes(bool b = true) { println("{}",(b ? "Yes" : "No")); }
inline void No() { println("{}", "No");}
// clang-format on

int main() {
    cin.tie(nullptr);
    ios::sync_with_stdio(false);
    int N, M;
    cin >> N >> M;
    set<pair<int, int>> st;
    int ans = 0;
    for (int i = 0; i < M; i++) {
        int a, b;
        cin >> a >> b;
        if (st.contains({b, a})) ans++;
        st.insert({a, b});
    }
    println("{}", ans);
}

提出情報

提出日時
問題 B - 友達関係の調査
ユーザ roromiya_tenkei
言語 C++23 (GCC 15.2.0)
得点 266
コード長 949 Byte
結果 AC
実行時間 129 ms
メモリ 15904 KiB

ジャッジ結果

セット名 Sample All
得点 / 配点 0 / 0 266 / 266
結果
AC × 3
AC × 76
セット名 テストケース
Sample sample01.txt, sample02.txt, sample03.txt
All sample01.txt, sample02.txt, sample03.txt, in01.txt, in02.txt, in03.txt, in04.txt, in05.txt, in06.txt, in07.txt, in08.txt, in09.txt, in10.txt, in11.txt, in12.txt, in13.txt, in14.txt, in15.txt, in16.txt, in17.txt, in18.txt, in19.txt, in20.txt, in21.txt, in22.txt, in23.txt, in24.txt, in25.txt, in26.txt, in27.txt, in28.txt, in29.txt, in30.txt, in31.txt, in32.txt, in33.txt, in34.txt, in35.txt, in36.txt, in37.txt, in38.txt, in39.txt, in40.txt, in41.txt, in42.txt, in43.txt, in44.txt, in45.txt, in46.txt, in47.txt, in48.txt, in49.txt, in50.txt, in51.txt, in52.txt, in53.txt, in54.txt, in55.txt, in56.txt, in57.txt, in58.txt, in59.txt, in60.txt, in61.txt, in62.txt, in63.txt, in64.txt, in65.txt, in66.txt, in67.txt, in68.txt, in69.txt, in70.txt, in71.txt, in72.txt, in73.txt
ケース名 結果 実行時間 メモリ
in01.txt AC 3 ms 6392 KiB
in02.txt AC 2 ms 6476 KiB
in03.txt AC 2 ms 6460 KiB
in04.txt AC 2 ms 6336 KiB
in05.txt AC 2 ms 6320 KiB
in06.txt AC 2 ms 6460 KiB
in07.txt AC 3 ms 6284 KiB
in08.txt AC 105 ms 15748 KiB
in09.txt AC 4 ms 6648 KiB
in10.txt AC 127 ms 15788 KiB
in11.txt AC 127 ms 15744 KiB
in12.txt AC 127 ms 15800 KiB
in13.txt AC 128 ms 15788 KiB
in14.txt AC 82 ms 15824 KiB
in15.txt AC 127 ms 15696 KiB
in16.txt AC 85 ms 15736 KiB
in17.txt AC 129 ms 15820 KiB
in18.txt AC 3 ms 6436 KiB
in19.txt AC 120 ms 15632 KiB
in20.txt AC 125 ms 15696 KiB
in21.txt AC 50 ms 15904 KiB
in22.txt AC 51 ms 15864 KiB
in23.txt AC 62 ms 15876 KiB
in24.txt AC 64 ms 15632 KiB
in25.txt AC 119 ms 15664 KiB
in26.txt AC 120 ms 15664 KiB
in27.txt AC 2 ms 6400 KiB
in28.txt AC 2 ms 6284 KiB
in29.txt AC 2 ms 6400 KiB
in30.txt AC 3 ms 6564 KiB
in31.txt AC 3 ms 6704 KiB
in32.txt AC 3 ms 6640 KiB
in33.txt AC 55 ms 15744 KiB
in34.txt AC 3 ms 6512 KiB
in35.txt AC 3 ms 6512 KiB
in36.txt AC 2 ms 6392 KiB
in37.txt AC 2 ms 6400 KiB
in38.txt AC 2 ms 6400 KiB
in39.txt AC 2 ms 6532 KiB
in40.txt AC 2 ms 6460 KiB
in41.txt AC 2 ms 6532 KiB
in42.txt AC 2 ms 6288 KiB
in43.txt AC 2 ms 6352 KiB
in44.txt AC 119 ms 15416 KiB
in45.txt AC 2 ms 6320 KiB
in46.txt AC 125 ms 15608 KiB
in47.txt AC 124 ms 15824 KiB
in48.txt AC 106 ms 15788 KiB
in49.txt AC 119 ms 15856 KiB
in50.txt AC 125 ms 15800 KiB
in51.txt AC 61 ms 15824 KiB
in52.txt AC 125 ms 15824 KiB
in53.txt AC 116 ms 15804 KiB
in54.txt AC 125 ms 15820 KiB
in55.txt AC 126 ms 15736 KiB
in56.txt AC 55 ms 15748 KiB
in57.txt AC 50 ms 15804 KiB
in58.txt AC 2 ms 6480 KiB
in59.txt AC 2 ms 6308 KiB
in60.txt AC 2 ms 6460 KiB
in61.txt AC 2 ms 6480 KiB
in62.txt AC 2 ms 6392 KiB
in63.txt AC 2 ms 6460 KiB
in64.txt AC 2 ms 6404 KiB
in65.txt AC 2 ms 6344 KiB
in66.txt AC 2 ms 6640 KiB
in67.txt AC 2 ms 6560 KiB
in68.txt AC 2 ms 6404 KiB
in69.txt AC 2 ms 6460 KiB
in70.txt AC 2 ms 6532 KiB
in71.txt AC 2 ms 6456 KiB
in72.txt AC 2 ms 6532 KiB
in73.txt AC 63 ms 15788 KiB
sample01.txt AC 2 ms 6460 KiB
sample02.txt AC 2 ms 6404 KiB
sample03.txt AC 2 ms 6436 KiB