知识点：模拟、字符串处理

#include <iostream>
#include <cstring>
#include <algorithm>
using namespace std;
int n;
struct node {
    string name, sex, id;
    int num;
}ans1, ans2;
int main() {
    ans1.num = -1, ans2.num = 101;
    cin >> n;
    for (int i =0; i < n; i ++ ) {
        string a, b, c;
        int d;
        cin >> a >> b >> c >> d;
        node x = {a, b, c, d};
        if(b == "M" && d < ans2.num) ans2 = x;
        else if(b == "F" && d > ans1.num) ans1 = x;
    }
    if(ans1.num == -1) cout<< "Absent" << endl;
    else cout << ans1.name << ' ' << ans1.id << endl;
    if(ans2.num == 101) cout<< "Absent" << endl;
    else cout << ans2.name << ' ' << ans2.id << endl;
    if(ans1.num == -1 || ans2.num == 101) cout << "NA" << endl;
    else cout << ans1.num - ans2.num << endl;
    return 0;
}