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  1. function Hailstones(curr, count)
  2. if curr==1: return count
  3. count=count+1
  4. if curr%2==0 : return Hailstones(curr/2, count)
  5. return Hailstones((3*curr)+1, count)
  6. end
  7.  
  8. print(Hailstones(13, 0))
Success #stdin #stdout 0.01s 6768KB
stdin
Standard input is empty
stdout
9