妍恐龙的博客....^~^眼熟我

分数表达式Time Limit: 1000 MSMemory Limit: 32768 KTotal Submit: 249(118 users)Total Accepted: 123(114 users)Rating: Special Judge: NoDescription

Friend-GraphTime Limit: 10000/5000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 611 Accepted Submission(s): 313Problem Description It is well known that small

问题 A: 谷神的游戏 时间限制: 1 Sec 内存限制: 16 MB 提交: 344 解决: 72 [提交][状态][讨论版] 题目描述 NEUQ的谷神要和我玩一个游戏：谷神要求我随机在纸上写出整数集合{1,2,3，…,3n+1}（n是整数）的一个排列（即不重复的随机写出从1到3n+1的所有整数）。并且要求在我写的过程中，从我写的第一个数开始一直加到我正在写的数的总和不被3整除。

D. Anton and School - 2 time limit per test2 seconds memory limit per test256 megabytes inputstandard input outputstandard output As you probably know, Anton goes to school. One of the school subj

E. Timofey and remodulingtime limit per test:2 secondsmemory limit per test:256 megabytesinput:standard inputoutput:standard outputLittle Timofey likes integers a lot. Unfortunately, he is very young a

C. Memory and De-Evolutiontime limit per test:2 secondsmemory limit per test:256 megabytesinput:standard inputoutput:standard outputMemory is now interested in the de-evolution of objects, specifically

Mathematician QSCTime Limit: 2000/1000 MS (Java/Others)    Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 142    Accepted Submission(s): 66Problem DescriptionQSC dream of

对于n阶幻的定义和详解，请点击传送门：叫我萌萌哒的传送门。我自己写了一下代码实现，代码写的有点渣，将就看。。。。1：奇数阶void dfs(int x,int y){ if(k==n*n+1) return ; int fx=x-1>=1?x-1:n; int fy=y+1>n?1:y+1; if(a[fx][fy]==0) {

DescriptionOnce, in one kingdom, there was a queen and that queen was expecting a baby. The queen prayed: ``If my child was a son and if only he was a sound king.'' After nine months her child w

一直不知道差分约束是什么类型题目，最近在写最短路问题就顺带看了下，原来就是给出一些形如x-y好神奇的是这类问题竟然可以转换成图论里的最短路径问题，下面开始详细介绍下比如给出三个不等式,b-a由题我们可以得知，这个有向图中，由题b-a根据以上的解法，我们可能会猜到求解过程实际就是求从a到c的最短路径，没错的....简单的说就是从a到c沿着某条路径后把所有权值和k求出就是c

A Cubic number and A Cubic NumberTime Limit: 1000/1000 MS (Java/Others) Memory Limit: 65535/32768 K (Java/Others) Total Submission(s): 224 Accepted Submission(s): 129Problem Description A cubic