func_code_string: #include <bits/stdc++.h>   using namespace std;   const long double pie = 3.14159265358979;   const long long mod = 1e9 + 7;   string vow =  aeiou ;   void solve(int test_case) {     string f, m, s;     cin >> f >> m >> s;     map<string, string> beat;     beat[ rock ] =  scissors ;     beat[ scissors ] =  paper ;     beat[ paper ] =  rock ;     if (beat[f] == m && beat[f] == s)       cout <<  F ;     else if (beat[m] == f && beat[m] == s)       cout <<  M ;     else if (beat[s] == f && beat[s] == m)       cout <<  S ;     else       cout <<  ? ;     cout <<   n ;   }   int main() {     int t = 1;     for (int i = 0; i < t; i++) solve(i);     return 0;   }   