#include <iostream>
using namespace std;
int main()
{
int a[6][6];
cout << " ---- Array in start ---- " << endl;
for (int i = 0; i < 6; i++) {
for (int j = 0; j < 6; j++) {
a[i][j] = 0;
cout << a[i][j] ;
cout<< " ";
}
cout << " " << endl;
}
cout << endl;
cout << " ---- Array after modify ---- " << endl;
for (int i = 0; i < 6; i++) {
for (int j = 0; j < 6; j++)
if (a[i][j] == 0) {
a[i][j] = 1;
cout << a[i][j] ;
cout<< " ";
}
cout << " " << endl;
}
return 0;
}