题目链接:https://icpcarchive.ecs.baylor.edu/index.php?option=com_onlinejudge&Itemid=8&category=648&page=show_problem&problem=5151You have a rectangle of size N × M, N rows from top to bottom and M columns from left to right,that is divided int…
题目链接:https://icpcarchive.ecs.baylor.edu/index.php?option=com_onlinejudge&Itemid=8&category=648&page=show_problem&problem=5150 题目大意:给一幅N个点M条边的无向图,有一些边,其中一部分只能涂红色,一部分只能涂黑色,一部分两种颜色都可以涂.现要求红色的边不超过K条的生成树个数模1e9+7的值. 思路:感谢昂神滋磁,贴链接:http://sd-invol…
题目链接:https://icpcarchive.ecs.baylor.edu/index.php?option=com_onlinejudge&Itemid=8&category=648&page=show_problem&problem=5153 In an infinite chess board, some pawns are placed on some cells.You have a rectangular bomb that is W width and H…
题目链接:https://icpcarchive.ecs.baylor.edu/index.php?option=com_onlinejudge&Itemid=8&category=648&page=show_problem&problem=5155 There are N guests checking in at the front desk of the hotel. 2K (0 ≤ 2K ≤ N) of them are twins.There are M room…
题目链接:https://icpcarchive.ecs.baylor.edu/index.php?option=com_onlinejudge&Itemid=8&category=648&page=show_problem&problem=5159 In normal football games, the winner team gets 3 points, loser team gets 0 point, and if there is a drawgame, bot…
Long long ago there is a strong tribe living on the earth. They always have wars and eonquer others.One day, there is another tribe become their target. The strong tribe has decide to terminate them!!!There are m villages in the other tribe. Each vil…
题目链接:https://icpcarchive.ecs.baylor.edu/index.php?option=com_onlinejudge&Itemid=8&category=648&page=show_problem&problem=5160 There is a tree with N nodes, and every node has a weighted value. A RIP (restricted increasing path)is a directe…
模拟题: add的时候出现过的则不再添加 close的时候会影响到top rotate(Prior.Choose)的时候会影响到top /*=============================================================== * Copyright (C) 2014 All rights reserved. * * File Name: hdu5071.cpp * Author:sunshine * Created Time: 2014-11-11 *…
Galaxy Problem's Link:   http://acm.hdu.edu.cn/showproblem.php?pid=5073 Mean: 在一条数轴上,有n颗卫星,现在你可以改变k颗卫星的位置,使得剩下的n-k颗卫星到某个点(不固定)的距离的平方和最小. 抽象成数学语言后等价于:数轴上有n个点,现在去掉k个点,使得剩下的n-k个点的方差最小,求方差*n的值. analyse: 一道让人很容易想偏的数学题.首先说一下我的思路: 1)我们最终的目的是让这n-k个点尽量的集中,所以去…
Hatsune Miku Problem's Link:   http://acm.hdu.edu.cn/showproblem.php?pid=5074 Mean: 有m种音符(note),现在要从这m种音符中选出n个来组成一首歌,相邻两个音符之间会有一个评分的方式,即score(i,j),而score(i,j)题目已经给出,现在要你按照题目的规定来选出n个音符来使得最终的分数最高. analyse: 鞍山赛区第二大水题,很简单的dp. 具体思路:dp[i][j]表示第i个音符选择的是第j种.…