제출 #903613

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
903613		Tenis0206	Street Lamps (APIO19_street_lamps)	C++11	0 / 100	1 ms	600 KiB

street_lamps

#include <bits/stdc++.h>

using namespace std;

int n,q;

int main()
{
    freopen("nr.in","r",stdin);
    freopen("nr.out","w",stdout);
    srand(time(NULL));
    cin>>n>>q;
    cout<<n<<' '<<q<<'\n';
    for(int i=1;i<=n;i++)
    {
        cout<<rand() % 2;
    }
    cout<<'\n';
    for(int i=1;i<=n;i++)
    {
        int tip = rand() % 2;
        if(tip == 0)
        {
            cout<<"toggle ";
            cout<<1 + rand() % n<<'\n';
        }
        else
        {
            cout<<"query ";
            int st = 1 + rand() % (n + 1);
            int dr = 1 + rand() % (n + 1);
            while(st == dr)
            {
                st = 1 + rand() % (n + 1);
                dr = 1 + rand() % (n + 1);
            }
            if(st > dr)
            {
                swap(st,dr);
            }
            cout<<st<<' '<<dr<<'\n';
        }
    }
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

street_lamps.cpp: In function 'int main()':
street_lamps.cpp:9:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    9 |     freopen("nr.in","r",stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~
street_lamps.cpp:10:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   10 |     freopen("nr.out","w",stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 20
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 20
• Subtask 5: 0 / 20