ridiculous
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@XUPT ACM-ICPC
@XUPT ACM-ICPC
@XUPT ACM-ICPC
@XUPT ACM-ICPC
@XUPT ACM-ICPC
@XUPT ACM-ICPC
@XUPT ACM-ICPC
@XUPT ACM-ICPC
@XUPT ACM-ICPC
@XUPT ACM-ICPC
@XUPT ACM-ICPC
@XUPT ACM-ICPC
@XUPT ACM-ICPC
@XUPT ACM-ICPC
@XUPT ACM-ICPC
@XUPT ACM-ICPC
@XUPT ACM-ICPC
@XUPT ACM-ICPC
@XUPT ACM-ICPC
@XUPT ACM-ICPC