View Compilation Error

0_0_32722558_2591.cpp: In function 'std::string solve(const string&, int, int)':
0_0_32722558_2591.cpp:27:12: error: a function-definition is not allowed here before '{' token
 int main() {    int T;    string s;    cin>>T;    
            ^
0_0_32722558_2591.cpp:29:10: error: expected '}' at end of input
 return 0;}
          ^