2018年4月19日
UVA 10382 Watering Grass（区间覆盖）
摘要： n sprinklers are installed in a horizontal strip of grass l meters long and w meters wide. Each sprinkler is installed at the horizontal center line o 阅读全文
posted @ 2018-04-19 23:02 litos 阅读(245) 评论(0) 推荐(0) 编辑