2019年9月9日

HDU 5047 Sawtooth 找规律+拆分乘

摘要： Sawtooth Think about a plane: ● One straight line can divide a plane into two regions. ● Two lines can divide a plane into at most four regions. ● Thr 阅读全文

posted @ 2019-09-09 19:23 Caution_X 阅读(162) 评论(0) 推荐(0)

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