Submission #57438

#	Time	Username	Problem	Language	Result	Execution time	Memory
57438		chungdahm2014	줄서기 (KOI17_line)	C++98	7 / 100	100 ms	620 KiB

line

#include <bits/stdc++.h>

using namespace std;

int n,m;
int arr[10];
int x[50],y[50];

int main()
{
    int i,j;

    scanf("%d %d",&n,&m);

    for(i=0;i<m;i++)
    {
        scanf("%d %d",&x[i],&y[i]);
    }

    for(i=0;i<n;i++)
    {
        arr[i]=i+1;
    }

    do{

        /// 1

        bool good=true;

        for(i=0;i<m;i++)
        {
            if(arr[x[i]-1]<arr[y[i]-1]) good=false;
        }

        /// 2

        int cnt=0;

        for(i=0;i<n;i++)
        {
            for(j=i+1;j<n;j++)
            {
                if(arr[i]>arr[j]) cnt++;
            }
        }

        if(cnt!=m) good=false;

        // 결과

        if(good)
        {
            for(i=0;i<n;i++)
            {
                printf("%d ",arr[i]);
            }
            return 0;
        }

    }while(next_permutation(arr,arr+n));

    printf("-1");

    return 0;
}

Compilation message (stderr)

line.cpp: In function 'int main()':
line.cpp:13:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d",&n,&m);
     ~~~~~^~~~~~~~~~~~~~~
line.cpp:17:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d",&x[i],&y[i]);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 0 / 21
• Subtask 3: 0 / 30
• Subtask 4: 0 / 42