X与Y互换算两种情况么

P1445 [Violet] 樱花

@[北方有小仙儿](/space/show?uid=27059) 二元组有序
by x_angelkawaii_x @ 2018-11-06 14:16:10


# %%%SYJ切蓝题TQL
by BuXiangJuanLe @ 2018-11-06 14:23:01


@[北方有小仙儿](/user/27059) 自己看题目里【说明/提示】一栏
by zhangboyang1024 @ 2021-11-01 21:40:06


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