Submission #57434

#	Time	Username	Problem	Language	Result	Execution time	Memory
57434		daniel060811	줄서기 (KOI17_line)	C++98	7 / 100	1087 ms	596 KiB

line

#include <bits/stdc++.h>

using namespace std;

pair<int, int> a[1000000];
int arr[1000000];
int main()
{
    int n, i, j, m, cnt;

    scanf("%d %d", &n, &m);
    for(i=0; i<m; i++)
    {
        scanf("%d %d", &a[i].first, &a[i].second);
    }
    for(i=0; i<n; i++) arr[i]=i+1;
    do
    {
        cnt=0;
        bool good = true;
        for(i=0; i<m; i++)
        {
            if(arr[a[i].first-1]<arr[a[i].second-1]) good=false;
        }
        for(i=0; i<n; i++)
        {
            for(j=i+1; j<n; j++)
            {
                if(arr[i]>arr[j]) cnt++;
            }
        }
        if(cnt!=m) good=false;
        if(good==true)
        {
            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:11:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d", &n, &m);
     ~~~~~^~~~~~~~~~~~~~~~~
line.cpp:14:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d", &a[i].first, &a[i].second);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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