#include <iostream>
using namespace std;
 
int main() {
    int a[100][100]={0},row, col;
    cin>>row>>col;
    for(int i = 1; i <= row; i++){
        for(int j = 1; j <= col; j++){
            cin>>a[i][j];
        }
    }
    for(int i = 1; i <= row; i++){
        for(int j = 1; j <= col; j++){
            if(!a[i - 1][j] && !a[i][j + 1] && !a[i + 1][j] && !a[i][j - 1])
                a[i][j] = 0;
        }
    }
    for(int i = 1; i <= row; i++){
        for(int j = 1; j <= col; j++){
            cout<<a[i][j]<<" ";
        }
        cout<<endl;
    }
    return 0;
}

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4 5
1 0 0 1 0
0 1 0 1 0
1 0 0 1 0
0 0 0 1 0