func_code_string: #include <bits/stdc++.h>   int main() {     int n(0);     scanf( %d n , &n);     std::string number;     getline(std::cin, number);     if (number.size() <= 3) {       std::cout << number << std::endl;     } else {       int index(0);       if (number.size() % 2) {         std::cout << number.substr(0, 3);         index = 3;       } else {         std::cout << number.substr(0, 2);         index = 2;       }       while (index < number.size()) {         std::cout <<  - ;         std::cout << number.substr(index, 2);         index += 2;       }       std::cout << std::endl;     }     return 0;   }   