题解 | #中彩票的的概率#
中彩票的的概率
https://www.nowcoder.com/practice/531e409e1b564cfbbb275c6a8d3a4b45
lottery=input().split()
possibility=input().split()
n=input().split()
lottery_combination={}
result=1
j=0
for i in lottery:
lottery_combination[i]=possibility[j]
j=j+1
for i in n:
result=result*float(lottery_combination[i])
# print(possibility)
# print(lottery_combination)
print('{:.3f}'.format(result))
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