/*
TASK:tab
LANG:C++
*/
#include<iostream>
#include<string>
using namespace std;
string a[100];
int m,n,i,j;
void find(int i,int j)
{
      if(a[i][j]='1')
      {a[i][j]='*';return find(i+1,j);return find(i-1,j);return find( i,j-1);return find(i,j+1);}
      return ;
      }    
int main()
{
    
    cin>>m>>n;
    for(i=0;i<n;i++)
    cin>>a[i];
    find(0,0);
    return 0;
}
