Two features were added to the interface in order to improve the view of the contest standings.

Codeforces Beta Round #10 took place on Thursday, 15th of April at 19:45 MSK. This time I am the author of the problems. I would like to thank the creator of the Codeforces Mike Mirzayanov for correcting the statements and Julia Satushina for the excellent translation problem statements into the English.

I want to apologize for the problem D. There was a bug in model solution. Moreover, this problem may not be solvable in polynomial time even with such constraints on the number's size. We will investigate it. I hope nobody will feel offended in any case.

UPD: Now I am pretty sure that my model solution for the problem D was completely wrong. I want to apologize for it again. There will be no rejudge of the solutions accepted during the contest. The statement will be changed so that it will ask to find the LCIS of the two sequences. This problem definitely has a solution.

UPD: Problem D was changed as I promised.

Dear girls and women! Happy Women's day! On behalf of the Codeforces team I would like to wish you all the best!

May love and care surround you! May you always catch the admiring gazes of men! Stay beautiful and clever and keep making us happy!