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Combinatorics problem
Difference between en1 and en2, changed 0 character(s)
Hello codeforces community!!↵
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On this occasion I bring up a combinatorics problem.↵
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This is the problem:↵
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How many permutations of length N exist such that the following holds: for each i (1 <= i < N) p[i+1] &mdash; p[i] != 1↵
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Constants: 1 <= N <= 500

History

 
 
 
 
Revisions
 
 
  Rev. Lang. By When Δ Comment
en3 English Kanata18 2025-01-20 04:48:27 0 Tiny change: 'N) p[i+1] &mdash; p[i] != 1' -> 'N) p[i+1] - p[i] != 1'
en2 English Kanata18 2025-01-20 04:46:53 0 Initial revision
en1 English Kanata18 2025-01-20 04:44:20 280 Initial revision (published)