func_code_string: #include <bits/stdc++.h>   using namespace std;   const int N = 200020;   long long int n;   int main() {     cin >> n;     for (long long int i = 1; i <= n - 1; i++) {       for (long long int j = 1; j <= n - 1; j++) {         if (i == j)           cout <<  0  ;         else           cout << 1 + (i + j - 2) % (n - 1) <<    ;       }       cout << (2 * i - 2) % (n - 1) + 1 << endl;     }     for (long long int i = 1; i <= n - 1; i++) {       cout << (2 * i - 2) % (n - 1) + 1 <<    ;     }     cout <<  0  << endl;     return 0;   }   