func_code_string: #include <bits/stdc++.h>   int main() {     int req_amount;     std::cin >> req_amount;     while (req_amount--) {       std::string s;       std::cin >> s;       int counter = 0;       for (const auto c : s) {         counter -= ((c ==  B ) ? -1 : 1);       }       std::cout << ((counter == 0) ?  YES  :  NO ) << std::endl;     }     return 0;   }   