C++ 代码

#include <iostream>
#include <cstdio>
#include <cstring>
#include <algorithm>
using namespace std;

int n;

int main()
{
    cin >> n;
    double sum = 0;
    int max = -0x3f3f3f3f;
    int min = 0x3f3f3f3f;
    for(int i = 0; i < n; i++)
    {
        int num;
        cin >> num;
        sum += num;
        if (num > max) max = num;
        if (num < min) min = num;
    }

    cout << max << endl << min << endl;
    printf("%.2lf\n", sum/n);
    return 0;
}