Hello,every one.I am here again.it's my second entry on codeforces,the same time I wrote the first one , I open another blog on China website Baidu.(though I seems like having many blogs , but I think it will be the most useful one.also these problems is mainly for people in my level,I am a rookie:))here is the link: http://hi.baidu.com/new/YAIMH1993. till now I just write one entry on my Baidu blog(I think the number will be more later:)),the only one entry is about the problems on Network follow.I think it is a at least not bad entry because I spend mush time translating the descriptions from English to Chinese(just for fun:)). and the problems are sellected from Hangzhou Dangzhou Dianzi University(we Chinese always call it HDU or HOJ),below is the link of the school Online Judge: http://acm.hdu.edu.cn/ you can register an Id and do problems on it.if you are a Div.1 level programmer,I think you can do the problems starting from the last one , because these problems are new and the proportion of hard problems are bigger than the proportion among early problems. now I want to write the link of problems of network follow on HDU(if you are Chinese,please read my Baidu blog ,it's easy for you to find the solution),and i will write the difficulty of each problem before each link of problem(range from 0 to 5,though HDU is a Chinese OJ,the problems are mainly wrote in English,so don't be afriad of click the link:))

hdu 1281 difficulty:2 link:http://acm.hdu.edu.cn/showproblem.php?pid=1281

hdu 1532 difficulty:0 http://acm.hdu.edu.cn/showproblem.php?pid=1532

hdu 1533 difficulty:1 http://acm.hdu.edu.cn/showproblem.php?pid=1533

hdu 1569 difficulty:1 http://acm.hdu.edu.cn/showproblem.php?pid=1569

hdu 1733 difficulty:4 http://acm.hdu.edu.cn/showproblem.php?pid=1733

hdu 1853 difficulty:2 http://acm.hdu.edu.cn/showproblem.php?pid=1853

hdu 2732 difficulty:1 http://acm.hdu.edu.cn/showproblem.php?pid=2732

hdu 2883 difficulty:2 http://acm.hdu.edu.cn/showproblem.php?pid=2883

hdu 3061 difficulty:2 http://acm.hdu.edu.cn/showproblem.php?pid=3061

hdu 3081 difficulty:3 http://acm.hdu.edu.cn/showproblem.php?pid=3081

hdu 3277 difficulty:3.5 http://acm.hdu.edu.cn/showproblem.php?pid=3277

hdu 3313 difficulty:4,5 http://acm.hdu.edu.cn/showproblem.php?pid=3313

hdu 3315 difficulty:3 http://acm.hdu.edu.cn/showproblem.php?pid=3315

hdu 3338 difficulty: http://acm.hdu.edu.cn/showproblem.php?pid=3338

hdu 3376 difficulty:2 http://acm.hdu.edu.cn/showproblem.php?pid=3376

hdu 3416 difficulty:2.5 http://acm.hdu.edu.cn/showproblem.php?pid=3416

hdu 3435 difficulty:3 http://acm.hdu.edu.cn/showproblem.php?pid=3435

hdu 3488 difficulty:2 http://acm.hdu.edu.cn/showproblem.php?pid=3488

hdu 3549 difficulty:1(0) http://acm.hdu.edu.cn/showproblem.php?pid=3549

hdu 3879 difficulty:3 http://acm.hdu.edu.cn/showproblem.php?pid=3879

hdu 3998 difficulty:5 http://acm.hdu.edu.cn/showproblem.php?pid=3998

hdu 4067 difficulty:5 http://acm.hdu.edu.cn/showproblem.php?pid=4067

that's all , thank you:) except the last problem,I have solve the other problems,if you have any question,you can contect me: you can :

write comments to me ,

send messages to me on codeforces,

or my E-mail: youareinmyheart1993#gmail.com

if you can use QQ , my QQ id is 2321409600.

Recently I have heard an algorithm to solve network flow in o(n*logn),I don't know whether it's true,if you know it , please tell me ,thank you:)

hello,everyone,I am a Chinese college student coming from China.You can call me my ID or YAIMY.(If you want to know me more ,you can sent messages to me) I usually solve problems on some chinese online judge such like Hangzhou Dianzi University Online Judge. Recently I am solving some problems on when I meet a problem that trouble always happen when I use my Network flow model which I used to use to solve many Network flow roblems on one online judge of China.once I submitted my code,the problem status always show this "Runtime Error(ACCESS_VIOLATION)" which puzzles me much.Then I search the F.A.Q and find that Runtime Error(ACCESS_VIOLATION) means that "Your program tried to read from or write to a address for which it does not have the appropriate access."(The linked website of F.A.Q http://acm.hdu.edu.cn/faq.php) for example , when I am doing the 3416th problem I meet this troule (Link: http://acm.hdu.edu.cn/status.php?first=&pid=&user=youareinmyheart〈=0&status=0). I make the array bigger but it still didn't work,so I hope that you can help me solve this problem,Thank you sincerely. below is the link of C++ code I wrote but not accepted: http://www.cppblog.com/YouAreInMyHeart/archive/2012/10/07/192950.html because you may not see the code below clearly,you can link the website up:) ------------------------------------分割线君----------------------------------------------- as the code is difficult to watch , so I delete them and remain the link of the code:) ------------------------------------分割线君----------------------------------------------- below is the link of the problem: http://acm.hdu.edu.cn/showproblem.php?pid=3416 I hope there will be someone who can help me,I wonder if my Netflow model is wrong,you can write comments or sent messages to me,thank you to watch my article sincerely,I hope that we can be friends.