Diguised's blog

By Diguised, history, 9 years ago, In English

Hi —

Recently I submit this solution to a polynomial FFT multiplication problem — POLYMUL.

Even on my computer — this solution runs very slow, and I cannot identify the reason. I'm wondering if anyone can assist in optimizing this solution — there must be something wrong for it to run so slowly.

Thanks in advance, Disguised

Full text and comments »

  • Vote: I like it
  • +9
  • Vote: I do not like it

By Diguised, history, 9 years ago, In English

Hi —

Recently I took look at problem from Hackerrank BACK TO SCHOOL CODESPRINT called Xor Subsequence. I'm wondering if there is solution to this problem that doesn't utilize FFT.

Link to problem

Full text and comments »

  • Vote: I like it
  • 0
  • Vote: I do not like it

By Diguised, 10 years ago, In English

Hi,

I was wondering whether anyone can help me solve this problem from POI. I have reduced the problem to finding a rooted tree with all vertices in the given tree that has 2*l leaves, but cannot get past this point. Any hints/solution are appreciated.

-Disguised

Full text and comments »

  • Vote: I like it
  • +3
  • Vote: I do not like it