2016年8月11日
Codeforces Round #337 (Div. 2) D. Vika and Segments 线段树 矩阵面积并
摘要： D. Vika and Segments Vika has an infinite sheet of squared paper. Initially all squares are white. She introduced a two-dimensional coordinate system 阅读全文
posted @ 2016-08-11 15:21 meekyan 阅读(197) 评论(0) 推荐(0) 编辑