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yiru941013
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Apr 12, 2017
| // Suppose they first meet at step k, the length of the Cycle is r. | ||
| // so 2k - k = nr, let n = 1, we have k = r | ||
| // m is the distance between start node of the cycle and first meeting node | ||
| // need (r - m) step to reach the start node of the cycle |
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