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  1. import sys
  2.  
  3. before = input()
  4. now = before
  5. cycle = 0
  6.  
  7. while True:
  8.     cycle += 1
  9.     if(len(now) == 1):
  10.         now = '0' + now
  11.         before = now
  12.     now = now[-1] + (str(int(now[0]) + int(now[1])))[-1]
  13.     if(now == before):
  14.         print(cycle)
  15.         break
Success #stdin #stdout 0.02s 9128KB
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https://ideone.com/2vbjlw
language:
Python 3 (python  3.9.5)
created:
3 years ago
visibility:
public

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