使用yum命令时，出现：Existinglock/var/run/yum.pid:anothercopyisrunningaspid:3355.Anotherappiscurrentlyholdingtheyumlock;waitingforittoexit...Theotherapplicationis:yum-updatesd-he……主要原因就是yum在自动更新只要关掉他就可以了解决方案：直接输入rm-f/var/run/y..
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其他好文 时间：
2014-08-11 15:21:03
阅读次数：
190
In this post, I’ll detail how to catch specific key presses and why this can be useful. This is another in my series of “requested” tutorials. There r...
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编程语言 时间：
2014-08-11 02:46:11
阅读次数：
467
Problem Description
PM Room defines a sequence A = {A1, A2,..., AN}, each of which is either 0 or 1. In order
to beat him, programmer Moor has to construct another sequence B = {B1, B2,... , BN} of...
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其他好文 时间：
2014-08-09 21:34:09
阅读次数：
365
就是算出来每一个C（N,M）是由哪些数乘来的就好。。。。
#include
#include
#include
#include
#include
#include
#include
#include
using namespace std;
#define LL long long
#define lcm(a,b) (a*b/gcd(a,b))
//O（n）求素数，1-...
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其他好文 时间：
2014-08-09 21:33:49
阅读次数：
295
Description
Count the Trees
Another common social inability is known as ACM (Abnormally Compulsive Meditation). This psychological disorder is somewhat common among programm...
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其他好文 时间：
2014-08-09 16:03:08
阅读次数：
296
hdu 3306 Another kind of Fibonacci...
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其他好文 时间：
2014-08-09 15:58:08
阅读次数：
260
Evaluate the value of an arithmetic expression in Reverse Polish Notation.Valid operators are +, -, *, /. Each operand may be an integer or another ex...
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其他好文 时间：
2014-08-08 23:49:56
阅读次数：
314
主要是4个默认函数的重写：
代码：
#include
using namespace std;
class Cstring{
private :
char * data;
public :
Cstring(const char * str =NULL);
Cstring(const Cstring &another);
~Cstring();
Cstring & ope...
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其他好文 时间：
2014-08-08 18:13:16
阅读次数：
181
Description
An encoding of a set of symbols is said to be immediately decodable if no code for one symbol is the prefix of a code for another symbol. We will assume for this problem that all ...
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其他好文 时间：
2014-08-08 12:52:26
阅读次数：
267
Description
Given a list of phone numbers, determine if it is consistent in the sense that no number is the prefix of another. Let’s say the phone catalogue listed these numbers:
1. Emergency 911
...
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其他好文 时间：
2014-08-08 12:49:16
阅读次数：
187
