计蒜客 T1315 平均年龄

版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/tobe_numberone/article/details/89057581

题目链接https://nanti.jisuanke.com/t/T1315
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//
// Created by Leo Lee on 2019/4/6.
//

#include <iostream>
using namespace std;
int main(){
    int cases;
    cin>>cases;
    double sum = 0,tmp = 0;
    for(int i = 0;i<cases;i++){
        cin>>tmp;
        sum+=tmp;
    }
    printf("%.2f\n",sum/cases);

    return 0;
}