제출 #484696

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
484696		nhanbin03	Watermelon (INOI20_watermelon)	C++14	0 / 100	0 ms	204 KiB

Main

#include <bits/stdc++.h>
#define task "a"
#define X first
#define Y second

using namespace std;

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

const int N = 0 + 10;



int main() {
    cin.tie(0)->sync_with_stdio(0);
    cout.tie(0);
    if (fopen(task ".inp","r")) {
        freopen(task ".inp","r",stdin);
        freopen(task ".out","w",stdout);
    }
    cout << -1;
}

컴파일 시 표준 에러 (stderr) 메시지

Main.cpp: In function 'int main()':
Main.cpp:20:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   20 |         freopen(task ".inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:21:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   21 |         freopen(task ".out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 7
• Subtask 2: 0 / 25
• Subtask 3: 0 / 31
• Subtask 4: 0 / 18
• Subtask 5: 0 / 19