题解 | #中彩票的的概率#
中彩票的的概率
https://www.nowcoder.com/practice/531e409e1b564cfbbb275c6a8d3a4b45
a=list(input().split(' ')) b=list(input().split(' ')) c=list(input().split(' ')) zidian={} n=len(a) for i in range(n): u=a[i] v=b[i] zidian[u]=v aa=1 for m in c: bb=zidian[m] aa=aa*float(bb) print(round(aa,3))