func_code_string: #include <bits/stdc++.h>   using namespace std;   const int N = 21;   string s;   long long heavy = 0, sol = 0;   int main() {     cin >> s;     for (int i = 0; i < s.size(); i++) {       string temp = s.substr(i, 5);       if (temp ==  heavy ) {         heavy++;         i += 4;       } else if (temp ==  metal ) {         sol += heavy;         i += 4;       }     }     printf( %I64d , sol);     return 0;   }   