Submission #57432

#	Time	Username	Problem	Language	Result	Execution time	Memory
57432		dakara2006	줄서기 (KOI17_line)	C++98	7 / 100	1071 ms	708 KiB

line

#include <bits/stdc++.h>

using namespace std;
pair<int,int> a[100005];
int arr[100005],num[100005],cnt,i,j,hap;
int main()
{
    int n,m;
    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;
        for(i=0;i<m;i++)
        {
            if(arr[a[i].first-1]>arr[a[i].second-1]) cnt++;
            else break;
        }
        if(cnt==m)
        {
            cnt=0;
            for(i=0;i<n;i++)
            {
                for(j=i+1;j<n;j++)
                {
                    if(arr[i]>arr[j]) cnt++;
                }
            }
            if(cnt==m)
            {
                hap=0;
                for(i=0;i<n;i++)
                {
                    num[i]=arr[i];
                    hap+=num[i];
                }
            }
        }
    }while(next_permutation(arr,arr+n));
    if(hap==0)
    {
        printf("-1");
        return 0;
    }
    for(i=0;i<n;i++)
    {
        printf("%d ",num[i]);
    }
    return 0;
}

Compilation message (stderr)

line.cpp: In function 'int main()':
line.cpp:9:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d",&n,&m);
     ~~~~~^~~~~~~~~~~~~~~
line.cpp:12:14: 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