day18_test = [[[[0, [5, 8]], [[1, 7], [9, 6]]], [[4, [1, 2]], [[1, 4], 2]]], [[[5, [2, 8]], 4], [5, [[9, 9], 0]]], [6, [[[6, 2], [5, 6]], [[7, 6], [4, 7]]]], [[[6, [0, 7]], [0, 9]], [4, [9, [9, 0]]]], [[[7, [6, 4]], [3, [1, 3]]], [[[5, 5], 1], 9]], [[6, [[7, 3], [3, 2]]], [[[3, 8], [5, 7]], 4]], [[[[5, 4], [7, 7]], 8], [[8, 3], 8]], [[9, 3], [[9, 9], [6, [4, 9]]]], [[2, [[7, 7], 7]], [[5, 8], [[9, 3], [0, 2]]]], [[[[5, 2], 5], [8, [3, 7]]], [[5, [7, 5]], [4, 4]]]
]