n=int(input())
a=input().split()
a=list(map(int,a))
da=max(a)
s=(sum(a)-da+da*0.9)*0.9
print("%.1f"%s)
/**************************************************************
	Problem: 1427
	User: admin
	Language: Python
	Result: Accepted
	Time:100 ms
	Memory:34244 kb
****************************************************************/