n=int(input())
s=list(map(int,input().split()))

s.sort()
s=s[1:len(s)-1]
print("%.1lf"%(sum(s)/len(s)))
print(" ".join(list(map(str,s))))

/**************************************************************
	Problem: 1453
	User: admin
	Language: Python
	Result: Accepted
	Time:92 ms
	Memory:34480 kb
****************************************************************/