func_code_string: #include <bits/stdc++.h>   using namespace std;   int cmp(string s1, string s2) {     if (s1 ==  rock  && s2 ==  scissors ) return 1;     if (s1 ==  scissors  && s2 ==  paper ) return 1;     if (s1 ==  paper  && s2 ==  rock ) return 1;     return 0;   }   int main() {     string s1, s2, s3;     cin >> s1 >> s2 >> s3;     if (cmp(s1, s2) && cmp(s1, s3)) {       putchar( F );       return 0;     }     if (cmp(s2, s1) && cmp(s2, s3)) {       putchar( M );       return 0;     }     if (cmp(s3, s1) && cmp(s3, s2)) {       putchar( S );       return 0;     }     putchar( ? );   }   