Submission #57436

#	Time	Username	Problem	Language	Result	Execution time	Memory
57436		praha0518	줄서기 (KOI17_line)	C++98	7 / 100	1069 ms	544 KiB

line

#include <bits/stdc++.h>

using namespace std;

int n,m;
int arr[10];
int x[40],y[40];

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; //1 2 3 4 . . . 9
    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;

        // result

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

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

    printf("-1\n");
    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:14:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     for(i=0;i<m;i++) scanf("%d %d",&x[i],&y[i]);
                      ~~~~~^~~~~~~~~~~~~~~~~~~~~

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