#include <iostream>
using namespace std;
int main() {
int n,m;
cin >> n >>m;
int arr[n][m];
for(int i=0; i < n; i++){
for(int j =0; j < m; j++ ){
int x;
x = 0;
arr[i][j] =x;
}
}
for (int i=0; i < n; i++){
for (int j = 0; j < m; j++){
cout <<arr [i][j]<<" ";
}
cout << endl;
}
}
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