05 2018 档案
摘要：集合和容器都是Java中的容器。 区别 数组特点：大小固定，只能存储相同数据类型的数据 集合特点：大小可动态扩展，可以存储各种类型的数据 转换 数组转换为集合： Arrays.asList(数组) 示例： 集合转换为数组： 集合.toArray(); 示例：
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摘要：题意：给一个二分图，存在重边，求使各点度数至少为k（0<=k<=min(d[i])）的最小边集合。 分析：首先建立一个源点s向二分图左边连边，建立一个汇点e，所有二分图右边的点向e点连边。要使每个点的度数大于等于k，可使流过每个点的流量小于等于d[i]-k。(d[i]为每个点的度数)，就可以在建立源
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摘要：题目链接： http://codeforces.com/contest/976/problem/E 题目： Recently Max has got himself into popular CCG “BrainStone”. As “BrainStone” is a pretty intellec
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摘要：Degree Set time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Degree Set time limit per tes
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摘要：Problem Statement Iroha is very particular about numbers. There are K digits that she dislikes: D1,D2,…,DK. She is shopping, and now paying at the cas
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摘要：文字列大好きいろはちゃんイージー / Iroha Loves Strings (ABC Edition) AtCoder - 1978 Problem Statement Iroha has a sequence of N strings S1,S2,…,SN. The length of each
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摘要：和風いろはちゃんイージー / Iroha and Haiku (ABC Edition) AtCoder - 1977 Problem Statement Iroha loves Haiku. Haiku is a short form of Japanese poetry. A Haiku con
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摘要：Problem Statement We have a large square grid with H rows and W columns. Iroha is now standing in the top-left cell. She will repeat going right or do
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摘要：Problem Description Julyed is preparing for her CET-6. She has N words to remember, but there is only M days left. If she can’t remember all these wor
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摘要：Little Q loves playing with different kinds of graphs very much. One day he thought about an interesting category of graphs called ``Cool Graph'', whi
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摘要：Yi Sima was one of the best counselors of Cao Cao. He likes to play a funny game himself. It looks like the modern Sudoku, but smaller. Actually, Yi S
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摘要：Alice and Bob is playing a game. Each of them has a number. Alice’s number is A, and Bob’s number is B. Each turn, one player can do one of the follow
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摘要：Frog FZU - 2272 Therearex frogs and y chicken in a garden. Kim found there are n heads and m legs in the garden. Please tell Kim how many frogs and ch
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摘要：阶乘除法 CSU - 1781 输入两个正整数 n, m,输出 n!/m!,其中阶乘定义为 n!= 1*2*3*...*n (n>=1)。 比如,若 n=6, m=3,则n!/m!=6!/3!=720/6=120。 是不是很简单?现在让我们把问题反过来:输入 k=n!/m!,找到这样的整数二元组(n
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摘要：You are given a sequence a1, a2, ..., an of one-dimensional segments numbered 1through n. Your task is to find two distinct indices i and j such that
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摘要：You might have heard about the next game in Lara Croft series coming out this year. You also might have watched its trailer. Though you definitely mis
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摘要：String can be called correct if it consists of characters "0" and "1" and there are no redundant leading zeroes. Here are some examples: "0", "10", "1
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摘要：1.改写comp从大到小排序。 运行结果： 233 113 23 13 3 什么会这样呢？比较时sort函数根据comp函数进行判断输的大小，系统默认 2.对结构体排序 比如ss结构体中a代表的是索引号，b代表的是索引对应的值，那么我想按索引排序，通过改写comp函数即可实现。 结果： 1 213
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