题解 | #中彩票的的概率#
中彩票的的概率
https://www.nowcoder.com/practice/531e409e1b564cfbbb275c6a8d3a4b45
num = input().split()
prob = input().split()
prob = [float(x) for x in prob]
d = dict(zip(num,prob))
choice = input().split()
m = 1.0
for ch in choice:
m *= d.get(ch)
print(round(m,3))
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