#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <algorithm>
#include <string>
#include <cstring>
#include <cmath>
#include <vector>

using namespace std;

int min(int d[], int len){
	int min = d[0];
	for(int i = 0; i < len; i++) if(min > d[i]) min = d[i];
	return min;	
}

int main(void)
{
	int n, m, d1, ukD = 0, kk = 0;
	cin>>n>>m;
	char suma[n][m];
	
	for(int i = 0; i < n; i++)
		for(int j = 0; j < m; j++) cin>>suma[i][j];	

     cout<<0;     
     return 0;
}