백준 파이썬 1546

Num = int(input())
subNumber = list(map(int, input().split()))
subNumber.sort()
H_score = subNumber[Num - 1]

for i in range(Num):
    subNumber[i] = subNumber[i] / H_score * 100

sum = 0
for i in range(Num):
    sum += subNumber[i]

aver = sum / Num
print('%.2f' % aver)