题目描述

blablabla

样例

#include<iostream>
#include<cstdio>
using namespace std;
const int N = 1e4 + 10;
int main()
{
    int n,a[N];
    double sum = 0;
    cin >> n;
    for(int i = 0; i < n; i ++ )
    {
        cin >> a[i];
    }
    int max = a[0], min = a[0];
    for(int i = 0; i < n; i ++ )
    {
        if(max<a[i])
            max = a[i];
    }
    for(int i = 0; i < n; i ++ )
    {
        if(min>a[i])
            min = a[i];
    }
    cout<<max<<endl<<min<<endl;
    for(int i = 0; i < n; i ++ )
    {
        sum+=a[i];
    }
    double ave = sum/n;

    printf("%.2lf",ave);

    return 0;
}