题目描述

样例

#include<bits/stdc++.h>
using namespace std;

int main()
{
    int n,a[10010];
    double ave;
    cin>>n;
    int maxn=-1,minn=10010;
    for(int i=0;i<n;i++)
    {
        cin>>a[i];
        if(maxn<a[i])maxn=a[i];
        if(minn>a[i])minn=a[i];
        ave+=(double)a[i]/n;

    }
    cout<<maxn<<endl<<minn<<endl;
    printf("%.2lf",ave);
    return 0;
}