double calc_vratio (int, int, vector<int>, vector<int>);
int calc_checker (vector<vector<int> > &, vector<int>, int, int);
double calc_c_score (vector<vector<int> > &, vector<int>, int, int);
double calc_vratio (int, int, vector<int>, vector<int>);
int calc_checker (vector<vector<int> > &, vector<int>, int, int);
double calc_c_score (vector<vector<int> > &, vector<int>, int, int);