Traceback (most recent call last): File "E:\two2\python\pycharm\py\suanfa\15\3.py", line 35, in <module> init() File "E:\two2\python\pycharm\py\suanfa\15\3.py", line 17, in init if step[ny] or ny > inf: ~~~~^^^^ IndexError: list index out of range

这个错误的原因是数组 `step` 的大小不够，无法容纳 `ny` 这个下标。根据 C++ 代码，数组 `step` 的大小为 `maxn=1001`，因此 Python 代码中也需要将 `step` 的大小定义为 `maxn+1=1002`。

以下是修改后的 Python 代码：

import queue

maxn = 1001
inf = 1000
step = [0] * (maxn + 1)

def init():
    global step
    q = queue.Queue()
    step[0] = 1
    q.put(1)
    while not q.empty():
        y = q.get()
        for x in range(1, y + 1):
            ny = y + (y // x)
            if step[ny] or ny > inf:
                continue
            step[ny] = step[y] + 1
            q.put(ny)

def solve():
    n, k = map(int, input().split())
    b = list(map(int, input().split()))
    c = list(map(int, input().split()))
    dp = [0] * (maxn * maxn)
    for i in range(n):
        for j in range(k, step[b[i]] - 1, -1):
            dp[j] = max(dp[j], dp[j - step[b[i]]] + c[i])
    print(dp[k])

if __name__ == '__main__':
    init()
    t = int(input())
    for _ in range(t):
        solve()