上代码: a = [2, 3, 3, 1, 1, 3, 3, 3, 2, 1, 3, 1, 3, 2, 2, 2, 3, 1, 2, 3, 2, 3, 1, 1, 2, 1, 1, 1, 2, 2, 3, 3, 2, 3, 1, 1, 3, 1, 2, 1, 2, 3, 3, 3, 2, 2, 3, 1, 2, 3, 1, 1, 2, 3, 2, 1, 2, 2, 2, 1, 1, 2, 2, 2, 3, 3, 2, 3, 2, 2, 3, 1, 1, 2, 1, 1, 1, 1, 1, 3,…