2018年10月31日
kuangbin专题七 HDU1540 Tunnel Warfare （前缀后缀线段树）
摘要： During the War of Resistance Against Japan, tunnel warfare was carried out extensively in the vast areas of north China Plain. Generally speaking, vil 阅读全文
posted @ 2018-10-31 23:45 Frontierone 阅读(193) 评论(0) 推荐(0) 编辑