#include<stdio.h>int main(void){ int max,min,n,i; double a[100]; double num; while(scanf("%d",&n)!=EOF){ if(n>2&&n<=100){ max=0; min=100; for(i=0;i<n;i++){ scanf("%lf",&a[i]); if(max<a[i]) max=a[i]; if(min>a[i]) min=a[i]; } num=0; for(i=0;i<n;i++){ num=num+a[i]; } printf("%.2lf",(num-max-min)/(n-2)); } }return 0;}
