제출 #71732

#제출 시각아이디문제언어결과실행 시간메모리
71732chobo (#119)천사의 모래시계 (FXCUP3_hourglass)C++98
58 / 100
4 ms740 KiB
#include <stdio.h>
#include <queue>
#include <algorithm>
using namespace std;

int ans[5555];
queue<int> q;

int main(){
    int n;

    scanf("%d",&n);

    for(int i=1;i<=5000;i++) ans[i]=-1;
    q.push(0);
    while(!q.empty()){
        int p=q.front(); q.pop();

        if(p==n){
            printf("%d",ans[p]);
            return 0;
        }

        if(ans[p+3]==-1) ans[p+3]=ans[p]+1,q.push(p+3);
        if(ans[p+5]==-1) ans[p+5]=ans[p]+1,q.push(p+5);
    }

    printf("-1");

    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

hourglass.cpp: In function 'int main()':
hourglass.cpp:12:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&n);
     ~~~~~^~~~~~~~~
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