#include<stdio.h> int main() { int arr[10]={0}; int i = 0; while (~scanf("%d %d %d %d %d %d %d", &arr[0], &arr[1], &arr[2], &arr[3], &arr[4], &arr[5], &arr[6])) { for(i=0;i<7;i++) { if(arr[i]>arr[0]) { int ret = arr[i]; arr[i]=arr[0]; arr[0]=ret; } if(arr[i]<arr[1]) { int ret = arr[i]; arr[i]=arr[1]; arr[1]=ret; } } float grade =0.0; int sum = 0; for(i = 2;i<7;i++) { sum +=arr[i]; } grade = sum/5.0; printf("%.2f\n",grade); } return 0; }