题解 | #中彩票的的概率#
中彩票的的概率
https://www.nowcoder.com/practice/531e409e1b564cfbbb275c6a8d3a4b45
list1=list(input().split())
list2=list(map(float, input().split()))
zipped=zip(list1,list2)
zipped_dict=dict(zipped)
buy=list(input().split())
p=1
for i in buy:
p*=zipped_dict[i]
print(round(p,3))