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  1. class num:
  2.     def __init__(self, v):
  3.         self.val = int(v)
  4.         self.sz = len(v)
  5.     def ignite(self):
  6.         tong = 0
  7.         for i in str(self.val):
  8.             tong += int(i)
  9.         self.val = tong
  10.         self.sz = len(str(self.val))
  11. n = num(input())
  12. while n.sz > 1:
  13.     n.ignite()
  14. print(n.val)
  15.  
Success #stdin #stdout 0.1s 14032KB
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https://ideone.com/NuCord
language:
Python 3 (python  3.12)
created:
1 day ago
visibility:
public

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