题解 | #计算题目难度#
计算题目难度
https://www.nowcoder.com/practice/76ae981719834b92b877bdc9ac6d38f3
numbers = list(map(lambda x:int(x),input().split(' ')))
avg_score = sum(numbers)/len(numbers)
full_mark_num = numbers.count(100)
print(round(avg_score/full_mark_num,1))
