func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n;     string s;     cin >> n;     cin >> s;     if (!(n % 2)) {       for (int i = 0; i < n; ++i) {         cout << s[i];         if (i % 2 && i != n - 1) cout <<  - ;       }     } else {       for (int i = 0; i < n - 3; ++i) {         cout << s[i];         if (i % 2) cout <<  - ;       }       for (int i = n - 3; i < n; ++i) cout << s[i];     }     return 0;   }   