2018-2019 ACM-ICPC, Asia Seoul Regional Contest

题目连接 Problems: https://codeforces.com/gym/101987/attachments/download/7921/20182019-acmicpc-asia-seoul-regional-contest-en.pdfhtml Problem A Circuits 求两条与 x x x 轴平行的线与矩形相交的最大数目ios 两条线一定在某个矩形的上边界或下边界上,
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