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  1. def flip(n): return int(''.join(reversed(str(n))))
  2.  
  3. def isLychrel(n):
  4. 	    for i in xrange(50):
  5. 	    	n1 = n + flip(n)
  6. 	    	if n1 == flip(n1): return False
  7. 	    	n = n1
  8. 	    return True
  9.  
  10. print len([n for n in xrange(10000) if isLychrel(n)])
Success #stdin #stdout 0.1s 23352KB
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https://ideone.com/adU5wA
language:
Python (cpython 2.7.16)
created:
8 years ago
visibility:
public

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