same logic

来源: Kamioka 2012-04-12 09:23:56 [] [博客] [旧帖] [给我悄悄话] 本文已被阅读: 次 (241 bytes)

1. repeats not in first position, and not zero: 15(2 out of 6)x9x6(2 out of 4)x8x7x7x6

2.first position is part of repeats:9x6x10(2 out of 5)x9x8x7x6

3. repeats not in first position, but include zeo: 15x9x6x8x7x6

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