#include <iostream>
#include <vector>
#include <unordered_map>
using namespace std;

double sum(double xuefen,double fenshu)
{
    if(fenshu < 60)
    {
        return 0;
    }
    return xuefen * (fenshu - 50) / 10;
}

double sumJiDian(vector<string> className,vector<double
 
> classScore,vector<double> classFenShu)
{
    double temp1 = 0;
    double temp2 = 0;

    for (int i = 0; i < className.size();++i)
    {
        if(classFenShu[i] < 60)
        {
            continue;
        }
        temp1 += sum(classScore[i], classFenShu[i]);
        temp2 += classScore[
 
i];
    }
    return temp1 / temp2;
}
int main()
{
    vector<string> className = {"網站設計與製作", "軟體工程", "介面技術", "組成原理實驗", "作業系統", "作業系統實驗", "編譯原理", "大學物理"};
    vector<double> classScore = {2, 2.5, 2, 1, 2, 1, 2
 
, 2};
    vector<double> classFenShu = {0, 0, 0, 0, 0, 0, 0, 0};//換成對應分數就行

    double jidian = sumJiDian(className, classScore, classFenShu);
    cout << jidian << endl;
    return 0;
}