第一题,2的倍数,100% T = int(input()) for k in range(T): n = int(input()) nums = list(map(int, input().split())) ans = 0 for i in range(n): if nums[i] * 2 in nums: ans += 1 print(ans) 第二题,迷宫,40% X,Y,N = map(int, input().split()) ans = 0 s = [] for i in range(N)...