下载数据后拿去测试，结果都对，但却是0分，求指点

#include <stdio.h>
int main()
{
    int n = 0;
    scanf("%d", &n);
    int num[] = { 0 };
    int i = 0;
    double sum = 0.0;
    int max, min;
    for (int i = 0;i < n;i++)
    {
        scanf("%d", &num[i]);
        sum += num[i];
    }
    max = min = num[0];
    for (int i = 0;i < n;i++)
    {
        if (num[i] > max)
        {
            max = num[i];
        }
        if (num[i] < min)
        {
            min = num[i];
        }
    }
    sum = (sum-max-min) / (n-2);
    printf("%.2llf\n",sum);
    return 0;
}