#include <stdio.h>
#define N 10
double aver(double*p,int n){
double max=0,min=*p;
double sum=0;
for(int i=0;i<N;i++,p++){
if(*(p)>*(p+1)&&(*p>max)){
max=*p;
}
else if(*p<min){
min=*p;
}
sum=sum+*p;
}
double aver=(sum-min-max)/(n-2);
return aver;
}
int main () {
double a[N],average;
for(int i=0;i<N;i++){
scanf("%lf",&a[i]);
}
average=aver(a,N);
printf("%4.2f",average);
return 0;
}