P.S. 在 QOJ 中，你只需要直接提交所有的答案文件即可，不需要使用题面中描述的 threes_admin.exe。当然如果你感兴趣，我们也把它包含在了本题的下发文件当中。
QOJ.ac
QOJ
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Total points:
100
Output Only
#293. 名为 Threes 的游戏
统计
此題目在以下比賽中使用過：
This problem is prepared by
AHdoc .
或者逐个上传：
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