ACM-ICPC 2018 徐州赛区网络预赛 G. Trace
摘要:
There's a beach in the first quadrant. And from time to time, there are sea waves. A wave ( xx , yy ) means the wave is a rectangle whose vertexes are 阅读全文
posted @ 2018-09-11 22:23 cltt 阅读(293) 评论(0) 推荐(0)
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