题目：给定一个长度为n，由非零整数成的数组，求连续子数组乘积为负数的个数example:

55 -3 3 -1 178

ChatGPT的答案，基本正确，有个地方多+1了

n = int(input())arr = list(map(int, input().split()))dp1, dp2 = [0] * (n+1), [0] * (n+1)for i in range(1, n+1):    if arr[i-1] > 0:        dp1[i] = dp1[i-1] + 1        dp2[i] = dp2[i-1]    else:        dp2[i] = dp1[i-1] + 1        dp1[i] = dp2[i-1]print(sum(dp1))print(sum(dp2))