제출 #1231962

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1231962		Aisha	Table Tennis (info1cup20_tabletennis)	C++20	0 / 100	3095 ms	12096 KiB

tabletennis

#include "bits/stdc++.h"

using namespace std;

#define int long long

signed main() {
    int n, k;
    cin >> n >> k;

    vector <int> a(n + k);
    for (int i = 0; i < n + k; i ++) cin >> a[i];
    // a is sorted

    vector <int> v(n + k, 0);

    int cnt1, cnt2, cnt0, sum1, sum2;
    cnt1 = cnt2 = cnt0 = sum1 = sum2 = 0;

    bool ok = false;

    auto rec = [&](auto&& rec, int i) -> void {
        if (ok) return;

        if (cnt1 > n / 2 || cnt2 > n / 2 || cnt0 > k) return;

        if (i == n + k) {
            if (cnt1 != n / 2 || cnt2 != n / 2 || cnt0 != k) return;
            cnt1 = 0, cnt2 = 0;
            for (int j = 0; j < n + k; j ++) {
                if (v[j] == 1) sum1 += a[j], cnt1 ++;
                if (v[j] == 2) sum2 += a[j], cnt2 ++;
            }
            if (sum1 != sum2 || cnt1 != cnt2) return;
            for (int j = 0; j < n + k; j ++) {
                if (v[j] > 0) cout << a[j] << ' ';
            }

            cout << endl;
            ok = true;
            return;
        }

        cnt0 ++;
        rec(rec, i + 1); 
        cnt0 --;

        v[i] = 1; cnt1 ++; 
        rec(rec, i + 1);  
        v[i] = 0; cnt1 --; 
        
        v[i] = 2; cnt2 ++; 
        rec(rec, i + 1); 
        v[i] = 0; cnt2 --; 
    };

    rec(rec, 0);
    if (!ok) cout << -1 / 0 << endl;

    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

tabletennis.cpp: In function 'int main()':
tabletennis.cpp:58:25: warning: division by zero [-Wdiv-by-zero]
   58 |     if (!ok) cout << -1 / 0 << endl;
      |                      ~~~^~~

• Subtask 1: 0 / 11
• Subtask 2: 0 / 9
• Subtask 3: 0 / 14
• Subtask 4: 0 / 15
• Subtask 5: 0 / 9
• Subtask 6: 0 / 14
• Subtask 7: 0 / 15
• Subtask 8: 0 / 13