1036. Boys vs Girls (25)

#include<iostream>
#include<algorithm>
#include<vector>
#include<map> 
#include<string>
#include<set>
using namespace std;
struct rec{
	string name;
//	char gender;
	string id;
	int grade; 
}; 
vector<rec> boy, girl;
bool comp(rec a, rec b){
	if(a.grade < b.grade) return true;
	else return false;
}
int main(){
	int n;
	cin>>n;
	for(int i = 0; i < n; i++){
		rec a;
		char gender;
		cin>>a.name>>gender>>a.id>>a.grade;
		if(gender == 'M'){
			boy.push_back(a);
		}
		else{
			girl.push_back(a);
		}
	}
	sort(boy.begin(),boy.end(),comp);
	sort(girl.begin(),girl.end(),comp);
	int nboy = boy.size();
	int ngirl = girl.size();
	bool abse = false;
	if(ngirl == 0){
		printf("Absent\n");
		abse = true;
	}
	else{
		cout<<girl[ngirl - 1].name<<" "<<girl[ngirl - 1].id<<endl;
	}
	if(nboy == 0){
		printf("Absent\n");
		abse = true;
	}
	else{
		cout<<boy[0].name<<" "<<boy[0].id<<endl;
	}
	if(abse == true){
		printf("NA");
	}
	else{
		cout<<girl[ngirl - 1].grade - boy[0].grade;
	}
	return 0;
}