Comments
+3

I tried to solve B using DP, but got Memory Limit Exceeded at test-case 3, anybody else tried it using recursive DP, or DP?
0

What is the logic for B? Thanks.
0

Can somebody post the link to the two problems which have been mentioned in A's editorial —

"The first iteration had |a-b|+|b-c|+|c-a|, and the second one had gcd(a,b)+gcd(b,c)+gcd(c,a)=n." Thanks.
0

Yeah, I got the logic but messed up in somewhat complex application, which was really bad.
0

a[0] and b[0] are the minimum ones of a and b, right?
+3

The logic for problem B? Thanks in advance.
-36

Hope to solve A, B, C.
0

Hi! Can you please give the submission link to you solution? I am trying to find it , but unable to do so right now. Thanks.
0

Does somebody have a resource, list of problems which are similar to Problem C? Thanks in advance.
+3

Thanks for the editorial.
On pooty → Finally hit red!, 3 years ago
0

Can you post your observations regarding each level? And how you think when approaching a problem? Or how to think , to how to think a problem?(yeah, this does make sense).
+8

Happy Birthday!
+33

Are editorials given for these contest's?
On YocyCraft → First time becoming red, 3 years ago
0

He/She have a math major. So, math is all round them. Even I am thinking of doing that. Do we have some course/MOOC ? Congrats for reaching red. The short editorials are really helpful
0

Can you please give an explanation of this? Also, what is meant by parity check?
0

Is your website available to public? Thanks for the answer.
0

I did 50 1900s, then 69 2000s, then 50 2100s, and then finally 50 2200s. While doing these, I did not look at the editorial, even if a single problem took days (with 3-4 exceptions).

Thanks for the reply. My questions are — 1.How during this routine, you managed to know, if you needed to learn something/ a new concept to solve the problem?

  1. How did you select the problems.Ex — inputting the range and then top 5?

Thanks a lot.

+4

  1. Please give an editorial for the problems.

  2. In the id column of the google form, I have to give my username, right?
0

The editorial is also not so good in English. Japanese ones are really good. Maybe they can translate the Japanese editorial to English ones.

1st by using google translate which works fine. Then just sort/edit it out. I did the translation online but letters get misplaced here and there.
0

For a beginner, what should be my goal in Regular and Grand Contests? I try to solve max in beginner contest(A,B,C,D,E,F) , while in Regular and Grand, my thoughts are to try A,B,C and then up solve the remaining if not solved during the contest?

Is this good?

0

A constructive problem? Can you explain that?