# 코딩 문제 관련/파이썬
Baekjoon 1546번(python)
Hwiyong Jo
2019. 4. 27. 02:44
C = int(input())
score = list(map(int, input().split(' ')))
max_score = max(score)
new_score = [(lambda x : ((x / max_score) * 100))(x) for x in score]
print(sum(new_score) / C)