func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n, s;     string c;     cin >> n >> c;     s = n;     string r =   ;     while (n > 0) {       if (n % 2 == 0) {         string y =   ;         y += c[s - n];         y += r;         r = y;       } else {         r += c[s - n];       }       n--;     }     cout << r;     return 0;   }   