1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
| #include <iostream>
using namespace std;
int T;
int n;
int main() {
cin >> T;
while (T--) {
cin >> n;
for (int r = 0; r < n; ++r) {
for (int c = 0; c < n; ++c) {
cout << (r == c || c == r + 1 || (r == n - 1 && c == 0) ? 1 : 0) << " ";
}
cout << endl;
}
cout << endl;
}
return 0;
}
|