题解 | 中彩票的的概率
中彩票的的概率
https://www.nowcoder.com/practice/531e409e1b564cfbbb275c6a8d3a4b45
numbers = list(map(int,input().split()))
probabilities = list(map(float,input().split()))
selected_nums = list(map(int,input().split()))
prob_dict = dict(zip(numbers,probabilities))
win_prob = 1.0
for num in selected_nums:
win_prob *= prob_dict.get(num,0)
print(f"{win_prob:.3f}")
