Fire.Spirits's blog

Need problems of FFT
By Fire.Spirits, history, 4 years ago, In English

Recently I learned FFT so I need problems of FFT of different competitive sites. Can you guys provide good problem in comment section:)

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4 years ago, # |
← Rev. 2   Vote: I like it +25 Vote: I do not like it

https://www.codechef.com/problems/SUMXOR2 (Relatively Easy)

https://www.codechef.com/problems/CHEFSSM (Requires math other than FFT too)

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4 years ago, # |
  Vote: I like it +17 Vote: I do not like it

https://codeforces.net/contest/632/problem/E

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4 years ago, # |
  Vote: I like it +8 Vote: I do not like it

Problem C from SWERC 2014/15 https://codeforces.net/gym/100783.

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4 years ago, # |
  Vote: I like it +8 Vote: I do not like it

Check this blog

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4 years ago, # |
  Vote: I like it +8 Vote: I do not like it

https://codeforces.net/contest/1251/problem/F (FFT)

https://codeforces.net/contest/438/problem/E (FFT + generating function)

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4 years ago, # |
  Vote: I like it +8 Vote: I do not like it

1398G - Running Competition
1218E - Product Tuples

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4 years ago, # |
  Vote: I like it +5 Vote: I do not like it

101821F - Lazy Hash Table

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4 years ago, # |
  Vote: I like it +5 Vote: I do not like it

https://open.kattis.com/problems/binaryvoting

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4 years ago, # |
  Vote: I like it +8 Vote: I do not like it

I guess you know you can filter CF problemset by tag but if you didn't know https://codeforces.net/problemset?tags=fft

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4 years ago, # |
  Vote: I like it +8 Vote: I do not like it
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4 years ago, # |
  Vote: I like it +12 Vote: I do not like it

Here are some FFT problems in Codeforces. Hope it'll help :)

528D - Fuzzy Search(Maybe it's better to use NTT?)
623E - Transforming Sequence
993E - Nikita and Order Statistics

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