/ 10
1 1 1 1 1 1 1 1 1 1
1 1 0 0 0 0 0 0 0 1
1 0 1 0 0 0 0 0 0 1
1 0 0 1 0 0 0 0 0 1
1 0 0 0 1 0 0 0 0 1
1 0 0 0 0 1 0 0 0 1
1 0 0 0 0 0 1 0 0 1
1 0 0 0 0 0 0 1 0 1
1 0 0 0 0 0 0 0 1 1
1 1 1 1 1 1 1 1 1 1
int N;
cin >> N;
for (int i = 1; i < N + 1; i++) {
    for (int j = 1; j < N + 1; j++)
        if (________)
            cout << "1 ";
        else
            cout << "0 ";
    cout << endl;
}