杭电2014

 1 #include <iostream>

 2 #include <iomanip>

 3 using namespace std;

 4 

 5 int main()

 6 {

 7     int n;

 8     double max,min,sum,aver;

 9     double a[110] = {0};

10     while (cin >> n)

11     {

12         for (int i = 0; i<n; i++)

13         {

14             cin >> a[i];

15         }

16         max = min = a[0];

17         sum = 0;

18         for (int i = 0; i<n; i++)

19         {

20             if (a[i]<=min)

21             {

22                 min = a[i];

23             }

24             if (a[i]>=max)

25             {

26                 max = a[i];

27             }

28             sum += a[i];

29         }

30         aver = (double)(sum-max-min)/(n-2);

31         cout<<setprecision(2)<< setiosflags(ios::fixed)<< aver <<endl;

32     }

33     return 0;

34 }