제출 #1110260

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1110260		vjudge1	Table Tennis (JOI24_tabletennis)	C++17	0 / 100	1 ms	336 KiB

Main

#include<bits/stdc++.h>
using namespace std;
int n,m;
void sol(){
    cin >>n>>m;
    int p=n-m-1;
    cout <<"YES"<<'\n';
    for(int i=2;i<=n;i++){
        for(int j=1;j<i;j++){
            if((i==p+1&&j==p)||j==p+1)cout <<0;
            else cout <<1;
        }
        cout <<'\n';
    }
}
int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    if(fopen("c.INP","r")){
        freopen("c.INP","r",stdin);
        freopen("c.OUT","w",stdout);
    }
    int q;
    cin >>q;
    while(q--){
        sol();
        cout <<'\n';
    }
}

컴파일 시 표준 에러 (stderr) 메시지

Main.cpp: In function 'int main()':
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("c.INP","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~
Main.cpp:22:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   22 |         freopen("c.OUT","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 4
• Subtask 3: 0 / 23
• Subtask 4: 0 / 30
• Subtask 5: 0 / 15
• Subtask 6: 0 / 23