ahmed_aly's blog

By ahmed_aly, history, 10 months ago, ,

Over a year ago I created some ladders on A2OJ, you can read the details of these ladders here.

Some people asked me to create more similar ladders, so for each rating range I created another ladder using a similar criteria which I used for the old ladders, with 200 problems in each ladder and none of them exists in any of the old ladders (they are bit harder than the old ladders).

Also I added another feature, now you don't need to go and click on the link in A2OJ to update your solved problems, all what you need to do is to include your Codeforces handle in your account page, join the ladder and start solving, once you solve a problem, A2OJ will detect that within a minute or so.

I have a small request if you are reading this and practiced using the old ladders, please let me know in a comment if these ladders really helped you, also please let me know if you have any suggestions, and thanks a lot in advance.

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 » 10 months ago, # |   +18 These ladders are really helped me. Thank you ahmed_aly very much. By these ladders, I finally reached Candidate master (I am Specialist before). By the way, I suggested that these ladders should by dynamic — which mean it automatically update, because the problems is more and more day by day. Also, could you please give some more ladder base on contest (not just in problemset). Which mean in contest id ABC, we have to solve problem xyz to reach new rating. I know this maybe to much by I would hope that you could do it. Finally, again, thank you very much for your ladders platform, ahmed_aly.
•  » » 10 months ago, # ^ |   +8 there is tool called codedrill
 » 10 months ago, # | ← Rev. 2 →   +6 Actually they helped me a lot, Thank you so much !I have a suggestion that you should add a tutorial how to get a problem's solution because a lot of beginners don't know how to get it if they stuck. Also telling them to turn off problem tags and use tags when they need because reading tags before trying will make their training less efficient.
 » 10 months ago, # |   +12 Very nice, thank you very much for your effort! They also helped me to reach candidate master :)
 » 10 months ago, # |   +14 Maybe you could give solvers the option to rate a problem (according to importance of concept, clarity of statement etc) and after some time make a ladder of top rated problems.
 » 10 months ago, # |   +14 I can't thank you enough ahmed_aly for the ladders. That's the only source that I use for solving problems from archive on codeforces. One of the features that I wanted is already there. Another one that I feel the need of is addition of problems from later rounds to ladders.
 » 10 months ago, # |   +3 Indeed they have helped a lot :DI have reached candidate master level from a mere 1400+ by these ladders :)A small suggestion-please make the number of problems even more in each level-cause there is a lot of overlap among the ladders, and also add more rating ranges-like 2200-2299, 2300-2399, etc :)
 » 10 months ago, # | ← Rev. 3 →   0 Hello Mr. Ahmad!What a coincidence! I have posted a blog 2 hours ago. It was about a problem in a2oj. I had commented on the problem but without been replied.So, please, may you help me in it? (link to the blog).
 » 10 months ago, # | ← Rev. 3 →   0 Very nice features Ahmed, also there are Facebook Chatbot that helps you track your progress on problems' categories, and you can select specific category or start from easy to hard. it's really helpful and designed to track your progress. you just need to provide your CodeForces handler and it will automatically mark problems you solved and continue the progress. you can try it. The Geek Bot: m.me/TheGeekBotI hope if all of you try it and provide us with your feedback.
 » 10 months ago, # |   0 Already ladders helped me to solve a lot of problems on basics and submit solutions more quickly, after a solved about 200 problems without know it's categories, helped me in contest more and to think and write code for easy ones more quickly. Now i can solve first problem in Contest during the first 10 Min( Before: take more than 20 Min to solve first problem).Problems A, B on Codeforces became more harder than previous need some techniques, so ladder must updated to be fit on Codeforces Rate.but really Thank you Ahmed_Aly for ladder, it helped me more and more in the last summer.
 » 10 months ago, # |   0 i want to suggest a cool feature your site allows anyone to know the count of the problems he solved but there is alot of other judges you dont consider them so why you dont update the allowed judges from time to time ahmed_aly
 » 10 months ago, # |   0 In the new ladders, is there a lack of problems from recent rounds like rounds #400+?
 » 10 months ago, # |   +8 I haven't done much of the problems from the rating ladders, but the Div.1 C and Div.1 D ladders definitely were one of the most helpful thing on which I have trained until now.
 » 10 months ago, # |   +6 I plan on using this for the main source of training. I will keep you posted about the progress!
 » 10 months ago, # |   0 WOW ! So another New Year Gift from a2oj.com.
 » 10 months ago, # |   0 What about ladders from another OJs ? UVa <3
 » 10 months ago, # |   0 Will it be a good idea to make a ladder for 'Dynamic Programming' ?
 » 4 weeks ago, # |   +1 why spoj submissions aren't getting updated on a2oj? is it happening only with me or is it a bug?
•  » » 4 weeks ago, # ^ |   0 also some ladders submissions aren't updated even if i submitted the same solution again and updated solved problems.
 » 4 weeks ago, # |   +3 Aside from the update issues with CodeForces, I really liked your A2OJ ladders and will continue to use them until I exhaust them all :P.I was introduced to them by my friend Mindjolt and I can say that I've become a bit better at CP. I always ensure that I'll recommend your ladders for first-time Competitive Programmers and experts alike, as CodeForces is a great platform for practice.