Участник:DChulkov/Leet1

Ссылки сюда (1) →

https://leetcode.com/problems/new-21-game/submissions/

class Solution:
    def new21Game(self, N: int, K: int, W: int) -> float:
        if K == 0: 
            return 1
        S = 1.0
        p = [1.0] + [0] * N
        for i in range(1, N + 1):
            p[i] = S / W
            if i < K:
                S += p[i]
            if 0 <= i - W < K:
                S -= p[i - W]
        return sum(p[K:])