1137 Final Grading

#include <iostream>
#include <string>
#include <unordered_map>
#include <vector>
#include <algorithm>
#include <cmath>
#include <fstream>
using namespace std;

struct Student{
    string id;
    int Gp,Gm,Gf,Gtot;
    Student():id(""),Gp(-1),Gm(-1),Gf(-1),Gtot(0){}
};

unordered_map<string,Student> mp;
vector<Student> stu;

bool cmp(Student a,Student b)
{
    if(a.Gtot!=b.Gtot) return a.Gtot>b.Gtot;
    else return a.id<b.id;
}

int main()
{
    //ifstream cin("pat.txt");
    int p,m,f;
    cin>>p>>m>>f;
    string id;
    int score;
    for(int i=0;i<p;i++){
        cin>>id>>score;
        mp[id].id=id;
        mp[id].Gp=score;
    }
    for(int i=0;i<m;i++){
        cin>>id>>score;
        mp[id].id=id;
        mp[id].Gm=score;
    }
    for(int i=0;i<f;i++){
        cin>>id>>score;
        mp[id].id=id;
        mp[id].Gf=score;
    }
    for(auto it:mp){
        Student st=it.second;
        if(st.Gm>st.Gf) st.Gtot=round(st.Gm*0.4+st.Gf*0.6);//注意四舍五入
        else st.Gtot=st.Gf;
        if(st.Gp>=200 && st.Gtot>=60) stu.push_back(st);
    }
    sort(stu.begin(),stu.end(),cmp);
    for(auto it:stu)
        cout<<it.id<<" "<<it.Gp<<" "<<it.Gm<<" "<<it.Gf<<" "<<it.Gtot<<"\n";
    return 0;
}