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先介绍怎么建文件目录，，然后使用vi !ls ls !dir 可以列出当前目录的内容 ， ls -l 竖排 ls -m横排 mkdir 建目录 rmdir 只能删空目录 ， 若不为空则用 rm -r dl （递归删除，但是会把你要删除的每一个都问一遍，可回答：Y N） rm -rf dl （不用询问 阅读全文
posted @ 2017-08-09 20:16
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该文被密码保护。 阅读全文
posted @ 2017-08-09 11:59
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Jessica's a very lovely girl wooed by lots of boys. Recently she has a problem. The final exam is coming, yet she has spent little time on it. If she 阅读全文
posted @ 2017-08-09 11:54
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Background Professor Hopper is researching the sexual behavior of a rare species of bugs. He assumes that they feature two different genders and that 阅读全文
posted @ 2017-08-09 11:52
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Farmer John wants to repair a small length of the fence around the pasture. He measures the fence and finds that he needs N (1 ≤ N ≤ 20,000) planks of 阅读全文
posted @ 2017-08-09 11:49
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In a highly developed alien society, the habitats are almost infinite dimensional space. In the history of this planet,there is an old puzzle. You hav 阅读全文
posted @ 2017-08-09 11:48
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Recently your team noticed that the computer you use to practice for programming contests is not good enough anymore. Therefore, you decide to buy a n 阅读全文
posted @ 2017-08-09 11:46
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Adam and Eve enter this year's ACM International Collegiate Programming Contest. Last night, they played the Calendar Game, in celebration of this con 阅读全文
posted @ 2017-08-09 11:45
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https://odzkskevi.qnssl.com/cd5694d5c85f39f2036f7473917563e5?v=1502195814 阅读全文
posted @ 2017-08-09 11:43
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Each New Year Timofey and his friends cut down a tree of n vertices and bring it home. After that they paint all the n its vertices, so that the i-th 阅读全文
posted @ 2017-08-09 11:41
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湫湫减肥 越减越肥！ 最近，减肥失败的湫湫为发泄心中郁闷，在玩一个消灭免子的游戏。 游戏规则很简单，用箭杀死免子即可。 箭是一种消耗品，已知有M种不同类型的箭可以选择，并且每种箭都会对兔子造成伤害，对应的伤害值分别为Di（1 <= i <= M），每种箭需要一定的QQ币购买。 假设每种箭只能使用一次 阅读全文
posted @ 2017-08-09 11:40
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Comrade Dujikov is busy choosing artists for Timofey's birthday and is recieving calls from Taymyr from Ilia-alpinist. Ilia-alpinist calls every n min 阅读全文
posted @ 2017-08-09 11:37
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https://odzkskevi.qnssl.com/8b9d8bb43198f28efe782047d56ab361?v=1501987995 阅读全文
posted @ 2017-08-09 11:36
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Bimokh is Mashmokh's boss. For the following ndays he decided to pay to his workers in a new way. At the beginning of each day he will give each worke 阅读全文
posted @ 2017-08-09 11:34
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The branch of mathematics called number theory is about properties of numbers. One of the areas that has captured the interest of number theoreticians 阅读全文
posted @ 2017-08-09 11:32
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在每年的校赛里，所有进入决赛的同学都会获得一件很漂亮的T-shirt。但是每当我们的工作人员把上百件的衣服从商店运回到赛场的时候，却是非常累的！所以现在他们想要寻找最短的从商店到赛场的路线，你可以帮助他们吗？ Input 输入包括多组数据。 每组数据第一行是两个整数NN,MM(N≤100N≤100, 阅读全文
posted @ 2017-08-09 11:29
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Max wants to buy a new skateboard. He has calculated the amount of money that is needed to buy a new skateboard. He left a calculator on the floor and 阅读全文
posted @ 2017-08-09 11:28
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Statements A sequence of positive and non-zero integers called palindromic if it can be read the same forward and backward, for example: 15 2 6 4 6 2 阅读全文
posted @ 2017-08-09 11:25
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Statements This is the first day for you at your new job and your boss asks you to copy some files from one computer to other computers in an informat 阅读全文
posted @ 2017-08-09 11:23
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A subsequence of a given sequence is the given sequence with some elements (possible none) left out. Given a sequence X = <x1, x2, ..., xm> another se 阅读全文
posted @ 2017-08-09 11:21
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https://odzkskevi.qnssl.com/516b2b3ad824ada50248f23d20f53083?v=1502089438 阅读全文
posted @ 2017-08-09 11:17
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这天，AutSky_JadeKAutSky_JadeK看到了nn张图片,他忍不住说道：“我TMTM社保！”。 每张图片有一个社保值，他可以合并两张图片，合并所得的图片的社保值是原来两张图片的社保值之和。 每次合并需要消耗的体力也是原来两张图片的社保值之和。 显然，n−1n−1次合并之后，只剩下一张图 阅读全文
posted @ 2017-08-09 11:15
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https://odzkskevi.qnssl.com/8d68abfe6e32509b1c446b13c725b0e4?v=1501696926 阅读全文
posted @ 2017-08-09 11:13
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Statements Alice and Bob play the following game. They choose a number N to play with. The rules are as follows: - They write each number from 1 to N 阅读全文
posted @ 2017-08-09 11:10
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Let's define the function f(n)=⌊n−−√⌋f(n)=⌊n⌋. Bo wanted to know the minimum number yy which satisfies fy(n)=1fy(n)=1. note:f1(n)=f(n),fy(n)=f(fy−1(n) 阅读全文
posted @ 2017-08-09 11:06
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There are n houses in the village and some bidirectional roads connecting them. Every day peole always like to ask like this "How far is it if I want 阅读全文
posted @ 2017-08-09 11:02
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A rooted tree is a well-known data structure in computer science and engineering. An example is shown below: In the figure, each node is labeled with 阅读全文
posted @ 2017-08-09 10:59
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1 #include 2 #include 3 using namespace std; 4 5 int main() 6 { string s="傻狗"; 7 for (float y=1.3;y>=-1.1;y-=0.06) 8 { 9 int index=0; 10 for(float x=-1.1;x<=1.1;x+=0.025) 11 ... 阅读全文
posted @ 2017-08-09 10:53
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1 /* 2 题目描述 3 4 有两个日期，求两个日期之间的天数，如果两个日期是连续的，则规定它们之间的天数为两天。 5 输入格式 6 7 有多组数据，每组数据有两行，分别表示两个日期，形式为YYYYMMDD 8 输入格式 9 10 每组数据输出一行，即日期差值 11 样例输入 12 13 20130101 14 20130105 15 样例输出 16 17 5 18... 阅读全文
posted @ 2017-08-09 10:52
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1 /* 2 题目描述 3 输入两个非负十进制整数A和B( 24 #include 25 using namespace std; 26 27 int main() 28 { int a,b,d; 29 scanf("%d%d%d",&a,&b,&d); 30 int sum=a+b; 31 int ans[31],num=0; //ans存放D进制... 阅读全文
posted @ 2017-08-09 10:50
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/* 题目描述 给定一个英语，要求编写程序，将句中所有单词按颠倒顺序输出 输入格式 测试输入包含一个测试用例，在一行内给出总长度不超过80的字符串。字符串由若干单 词和若干空格组成，其中单词是由英文字母（大小写有区分）组成的字符串，单词之间用1个 空格分开，输入保证句子末尾没有多余的空格。 输入格式 每个测试用例的输出展一行，出倒叙后的句子。 样例输入 Hello World Here I... 阅读全文
posted @ 2017-08-09 10:49
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There are N jobs to be finished. It takes a robot 1 hour to finish one job. At the beginning you have only one robot. Luckily a robot may build more r 阅读全文
posted @ 2017-08-09 10:46
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Saitama accidentally destroyed a hotel again. To repay the hotel company, Genos has volunteered to operate an elevator in one of its other hotels. The 阅读全文
posted @ 2017-08-09 10:43
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Problem Description C国的死对头A国这段时间正在进行军事演习，所以C国间谍头子Derek和他手下Tidy又开始忙乎了。A国在海岸线沿直线布置了N个工兵营地,Derek和Tidy的任务就是要监视这些工兵营地的活动情况。由于采取了某种先进的监测手段，所以每个工兵营地的人数C国都掌握的 阅读全文
posted @ 2017-08-09 10:39
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Problem Description 看病要排队这个是地球人都知道的常识。不过经过细心的0068的观察，他发现了医院里排队还是有讲究的。0068所去的医院有三个医生（汗，这么少）同时看病。而看病的人病情有轻重，所以不能根据简单的先来先服务的原则。所以医院对每种病情规定了10种不同的优先级。级别为1 阅读全文
posted @ 2017-08-09 10:33
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Problem Description The WHU ACM Team has a big cup, with which every member drinks water. Now, we know the volume of the water in the cup, can you tel 阅读全文
posted @ 2017-08-09 10:09
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Problem Description 有三个正整数a,b,c(0<a,b,c<10^6)，其中c不等于b。若a和c的最大公约数为b，现已知a和b，求满足条件的最小的c。 Input 第一行输入一个n，表示有n组测试数据，接下来的n行，每行输入两个正整数a,b。 Output 输出对应的c，每组测试 阅读全文
posted @ 2017-08-09 10:05
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Problem Description You want to processe a sequence of n distinct integers by swapping two adjacent sequence elements until the sequence is sorted in 阅读全文
posted @ 2017-08-09 10:03
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Problem Description As we all know, machine scheduling is a very classical problem in computer science and has been studied for a very long history. S 阅读全文
posted @ 2017-08-09 09:52
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A square number is an integer number whose square root is also an integer. For example 1, 4, 81 are some square numbers. Given two numbers a and b you 阅读全文
posted @ 2017-08-09 09:49
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Watchmen are in a danger and Doctor Manhattan together with his friend Daniel Dreiberg should warn them as soon as possible. There are n watchmen on a 阅读全文
posted @ 2017-08-09 09:45
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There are n pictures delivered for the new exhibition. The i-th painting has beauty ai. We know that a visitor becomes happy every time he passes from 阅读全文
posted @ 2017-08-09 09:43
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Friends are going to play console. They have two joysticks and only one charger for them. Initially first joystick is charged at a1 percent and second 阅读全文
posted @ 2017-08-09 09:41
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A big marathon is held on Al-Maza Road, Damascus. Runners came from all over the world to run all the way along the road in this big marathon day. The 阅读全文
posted @ 2017-08-09 09:22
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