View Code of Problem 612

#include<iostream>
#include<string>
#include<cmath>
#include<cstring>
#include<iomanip>
#include<cstdio>
#include<algorithm>
#include<ctype.h>
using namespace std;
int a[6];
int main()
{
	while (cin>>a[1])
	{
		for (int i = 1;i < 6;i++)
			cin >> a[i];
		sort(a, a + 6);
		double sum = 0;
		for (int i = 1;i < 5;i++)
		{
			sum += a[i];
		}
		double av = sum / 4.0;
		printf("%g\n", av);
	}
	
}