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| def answer(numbers): | |
| loop = list(set(numbers)) | |
| if len(loop) > 2: | |
| if loop[0] == 0: | |
| return len(loop) - 1 | |
| else: | |
| return 2 | |
| assert (answer([1, 3, 0, 1]) == 2) | |
| assert (answer([1, 0]) == 2) | |
| assert (answer([1, 2, 1]) == 2) |
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