#include<cstdio>
#define maxdim 250001
#define fin "stramosi.in"
#define fies "stramosi.out"
using namespace std;
int n,m,s[maxdim],p,q,i,h,j,v,a[maxdim];
int main()
{
    freopen(fin,"r",stdin);
    freopen(fies,"w",stdout);
    scanf("%i %i",&m,&n);
    for(i=1;i<=n;i++)
    s[i]=0;
    scanf("%i ",&a[i]);
    for(i=1;i<=n;i++)
    scanf(" %i",&a[i]);
    for(i=1;i<=m;i++)
    {
        scanf("%i %i\n",&p ,&q);
    }
    printf("0\n");
    return 0;
}