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进来看看！THANKS!2 2 4 C 1 1 2 P 1 2 C 2 2 2 P 1 2 // 2 1 我觉得第二组该是2哦 题意没理解清楚吗？2->2 color 2 所以1->2线段的颜色有1和2然过，所以该是2撒 怎么是1呢？ Followed by:
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