题解 | #中彩票的的概率#
中彩票的的概率
https://www.nowcoder.com/practice/531e409e1b564cfbbb275c6a8d3a4b45
num = list(map(int, input().split()))
rate = list(map(float, input().split()))
dic = dict(zip(num, rate))
n = list(map(int, input().split()))
ra = 1
for i in n:
ra = ra * dic[i]
print("{:.3f}".format(ra))
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