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  1.  
  2. x=input("ingresa numero")
  3. if x>20:
  4. while x>=0:
  5. a=2*x
  6. print a
  7. x=x-1
  8. else:
  9. while x<20 and x>5:
  10. print "hola"
  11. x=x-1
Runtime error #stdin #stdout 0.08s 8888KB
stdin
Standard input is empty
stdout
ingresa numero