费用流 建图很简单直接上代码 #include <map> #include <set> #include <list> #include <cmath> #include <ctime> #include <deque> #include <stack> #include <queue> #include <cctype> #include <cstdio> #include <…

Jurassic Remains Time Limit: 18000MS   Memory Limit: Unknown   64bit IO Format: %lld & %llu [Submit]   [Go Back]   [Status] Description   Paleontologists in Siberia have recently found a number of fragments of Jurassic period dinosaur skeleton. The p…

题意:对于n个数X[0]~X[n-1],但你不知道它们的值,通过逐步提供给你的信息,你的任务是根据这些信息回答问题,有三种信息如下: I p  v : Xp = v;    Xp 的值为v I p q v :  Xp ^ Xq = v;   Xp 异或Xq的值为v Q k X1 X2 X3 ..... Xk  : 问X1异或X2异或X3....异或Xk的值为多少? 解题思路:先看处理部分(I),有两种 I 一种 是后面有两个整数的,一种是后面有三个整数的,(这里的输入要注意整数有可能是好几个字符…

题意: 有一些简单化合物,每个化合物都由两种元素组成的,你是一个装箱工人.从实验员那里按照顺序把一些简单化合物装到车上,但这里存在安全隐患:如果车上存在K个简单化合物,正好包含K种元素,那么他们就会组成一个容易爆炸的混合物,为了安全起见,每当你拿到一个化合物时,如果它已经和已装车的化合物形成了易爆混合物,你就应该拒绝装车,否则就应该装车,输出你拒绝了多少个混合物. 思路: 一种化合物由两种元素组成,所以我们就可以把每个元素看成一个点,那么一个简单化合物就是一条边.当图出现环的时侯,组成环的边对应…

La terra di mezzo in trail running sembra essere distorto leggermente massima di recente, e gli aggiornamenti di scarpe da trail che erano svelte e agile in passato ora sembra essere catering per legioni di acquirenti di scarpe arrabbiati che misteri…

Il est toutefois vraiment à partir www.runmasterfr.com/free-40-flyknit-2015-hommes-c-1_58_59.html de la saison, bien que ceux-ci comprennent sans aucun doute l'athlète d'entrée destiné à «2016 chaussure de course sur la saison. «Il y a du plaisir à c…

UVALive - 4108 SKYLINE Time Limit: 3000MS     64bit IO Format: %lld & %llu Submit Status uDebug Description   The skyline of Singapore as viewed from the Marina Promenade (shown on the left) is one of the iconic scenes of Singapore. Country X would a…

UVALive - 3942 Remember the Word A potentiometer, or potmeter for short, is an electronic device with a variable electric resistance. It has two terminals and some kind of control mechanism (often a dial, a wheel or a slide) with which the resistance…

UVALive - 3942 Remember the Word Neal is very curious about combinatorial problems, and now here comes a problem about words. Know- ing that Ray has a photographic memory and this may not trouble him, Neal gives it to Jiejie. Since Jiejie can’t remem…

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…