password.cpp: In function 'std::string guess(long long int, long long int)':
password.cpp:11:12: error: 'query' was not declared in this scope
11 | if(query(string(1,a))==1)c.push_back(a);
| ^~~~~
password.cpp:14:19: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
14 | for(int j=0; j<c.size(); j++){
| ~^~~~~~~~~
password.cpp:16:23: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
16 | for(int i=0; i<c.size(); i++){
| ~^~~~~~~~~
password.cpp:18:20: error: 'query' was not declared in this scope
18 | if(query(string(1,c[i])+c[j])==2)cnt++;
| ^~~~~