样例输入输出是对的，#1 AC #2 AC #3 WA #4 WA #5 WA

#include<bits/stdc++.h>
using namespace std;
double a,b;
int agesum(double n){
    int s;
    for(;n>0;n--){
        cin>>s;
        a+=s;
    }
    return a;
}
int main(){
    double n;
    cin>>n;
    b=agesum(n)/n;
    cout<<a<<" ";
    cout<<fixed<<setprecision(5)<<b;
}

哪位大佬帮帮忙，检查一下