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  1. import strutils
  2.  
  3. iterator items(limit: int): seq[int] =
  4.     var
  5.         n = 1
  6.         nums: seq[int] = @[]
  7.         next: seq[int] = @[]
  8.     while n <= limit:
  9.         var count, pre: int
  10.         if nums.len == 0: next.add 0
  11.         else:
  12.             count = 0
  13.             pre = nums[0]
  14.             for i in nums:
  15.                 if pre == i:
  16.                     count += 1
  17.                 elif count > 2:
  18.                     next.add pre
  19.                     count = 1
  20.                     pre = i
  21.                 else:
  22.                     next.add count
  23.                     next.add pre
  24.                     count = 1
  25.                     pre = i
  26.             if count > 2:
  27.                 next.add pre
  28.             else:
  29.                 next.add count
  30.                 next.add pre
  31.         nums = next
  32.         next = @[]
  33.         yield nums
  34.         inc n
  35.  
  36. proc seqToStr(nums: seq[int]): string =
  37.     var str = ""
  38.     for i in nums: str.add i.intToStr
  39.     return str
  40.  
  41. for s in stdin.readLine.parseInt: echo s.seqToStr
Success #stdin #stdout 0s 2444KB
comments (?)
stdin
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15
stdout
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0
10
1110
110
2110
122110
11222110
2122110
1211222110
11122122110
12211222110
11222122110
21211222110
1211122122110
111212211222110
https://ideone.com/WLvRqB
language:
Nim (nim 0.19.4)
created:
7 years ago
visibility:
secret

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