func_code_string: #include <bits/stdc++.h>   using namespace std;   const int inf = 1e9 + 7;   const int N = 1e6 + 5;   int main() {     int n;     cin >> n;     for (int i = 0; i <= 2 * n; i++) {       for (int j = 0; j < 2 * abs(n - i); j++) cout <<    ;       int cnt = 0;       for (int j = 0; j <= 2 * n - 2 * abs(n - i); j++) {         if (j != 0) cout <<    ;         cout << cnt;         if (j >= n - abs(n - i))           cnt--;         else           cnt++;       }       cout << endl;     }     return 0;   }   