一.VI VI全称Visual Identity, 即企业VI视觉设计,通译为视觉识别系统.是将CI的非可视内容转化为静态的视觉识别符号.设计到位.实施科学的视觉识别系统,是传播企业经营理念.建立企业知名度.塑造企业形象的快速便捷之途.企业通过VI设计,对内可以征得员工的认同感,归属感,加强企业凝聚力,对外可以树立企业的整体形象,资源整合,有控制的将企业的信息传达给受众,通过视觉符码,不断的强化受众的意识,从而获得认同.VI为企业CIS中的一部分,企业CI包含三个方面.分别为BI.MI.VI,三…

3754: Tree之最小方差树 Time Limit: 20 Sec  Memory Limit: 256 MBSubmit: 402  Solved: 152[Submit][Status][Discuss] Description Wayne在玩儿一个很有趣的游戏.在游戏中,Wayne建造了N个城市,现在他想在这些城市间修一些公路,当然并不是任意两个城市间都能修,为了道路系统的美观,一共只有M对城市间能修公路,即有若干三元组 (Ui,Vi,Ci)表示Ui和Vi间有一条长度为Ci的双向道路.…

C - NP-Hard Problem Crawling in process... Crawling failed Time Limit:2000MS     Memory Limit:262144KB     64bit IO Format:%I64d & %I64u Description Pari wants to buy an expensive chocolate from Arya. She has n coins, the value of the i-th coin is ci…

A. Hongcow Learns the Cyclic Shift time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Hongcow is learning to spell! One day, his teacher gives him a word that he needs to learn to spell. Bein…

D. Happy Tree Party     Bogdan has a birthday today and mom gave him a tree consisting of n vertecies. For every edge of the tree i, some number xi was written on it. In case you forget, a tree is a connected non-directed graph without cycles. After…

Mr. Kitayuta's Colorful Graph Time Limit:1000MS     Memory Limit:262144KB     64bit IO Format:%I64d & %I64u Submit Status Practice CodeForces 505B Description Mr. Kitayuta has just bought an undirected graph consisting of n vertices and m edges. The…

B. Mr. Kitayuta's Colorful Graph time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Mr. Kitayuta has just bought an undirected graph consisting of n vertices and m edges. The vertices of the g…

题意 在区间[0,50000]上有一些整点,并且满足n个约束条件:在区间[ui, vi]上至少有ci个整点,问区间[0, 50000]上至少要有几个整点. 思路 差分约束求最小值.把不等式都转换为>=形式,那么显然有xvi >= xui-1 + ci,那么就在约束图中连一条(ui-1, vi, ci)的边:当然不要忘记隐含的不等式:xi >= xi-1 + 0;   xi-1 >= xi -1. 建完图后SPFA求最长路径即可 代码 [cpp] #include <iostr…

D. Mr. Kitayuta's Colorful Graph Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/506/problem/D Description Mr. Kitayuta has just bought an undirected graph with n vertices and m edges. The vertices of the graph are numbered…

D. Happy Tree Party Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/593/problem/D Description Bogdan has a birthday today and mom gave him a tree consisting of n vertecies. For every edge of the tree i, some number xi was w…