#include <bits/stdc++.h>
using namespace std;
#define endl '\n'
using ll = long long;
ll n,m,i,j;
char a;
int main()
{
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    cin>>n>>m;
    for (i=1;i<=n;i++) for (j=1;j<=m;j++) cin>>a;
    cout<<0;
    return 0;
}
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