2019年9月13日
POJ3164 Command Network(最小树形图)
摘要： After a long lasting war on words, a war on arms finally breaks out between littleken’s and KnuthOcean’s kingdoms. A sudden and violent assault by Knu 阅读全文
posted @ 2019-09-13 15:03 StarHai 阅读(322) 评论(0) 推荐(0)
HDU4918 Query on the subtree 点分治+树状数组
摘要： bobo has a tree, whose vertices are conveniently labeled by 1,2,…,n. At the very begining, the i-th vertex is assigned with weight w i.There are q ope 阅读全文
posted @ 2019-09-13 11:18 StarHai 阅读(325) 评论(0) 推荐(0)