#include <stdio.h>
int main()
{
int sum = 0;
int min = 100; //假设最低分为100
int max = 0; //假设最高分为0
int arr[7] = { 0 };
//整型数组输入
for (int i = 0; i < 7; i++)
{
scanf("%d", &arr[i]);
if (arr[i] > max)
{
max = arr[i];
}
if (arr[i] < min)
{
min = arr[i];
}
sum += arr[i];
}
double avg = (sum - max - min) / 5.0;
//输出
printf("%.2lf\n", avg);
return 0;
} 
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