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timu
- 有n(最大20)个人围成一圈,顺序排号。从第1个人开始报数(从1到3报数),凡报到3的人退出圈子,问最后留下的是原来第几号-With n (maximum 20) individuals form a circle, the order Arranging. 1 person reported from the start number (number from 1 to 3 report), 3 registration people who withdraw from the circle