题解

了解我的应该知道这个不是我做的，而是Deepseek......

#include<iostream>
#include<map>
#include<string>
#include<iomanip> 
using namespace std;
struct Student {
    string name;
    string number;
    int chinese;
    int math;
};
int main() {
    int n,m;
    cin>>n>>m;
    map<string, Student> nameMap;
    map<string, Student> numberMap;
    for (int i = 0; i < n; i++) {
        Student stu;
        cin>>stu.name>>stu.number>>stu.chinese>>stu.math;
        nameMap[stu.name] = stu;
        numberMap[stu.number] = stu;
    }
    for (int i = 0; i < m; i++) {
        string type, query;
        cin>>type>>query;
        if (type == "name") {
            Student stu = nameMap[query];
            cout << stu.chinese << " " << stu.math << endl;
        }
        else if(type=="number"){
            Student stu = numberMap[query];
            double average = (stu.chinese + stu.math) / 2.0;
            cout << fixed << setprecision(2) << average << endl;
        }
    }
}