def merge_sorted_list(num1,num2,num3):
  import heapq
  
  num1=sorted(num1)
  num2=sorted(num2)
  num3=sorted(num3)
  result = heapq.merge(num1,num2,num3)
  return list(result)
def merge_sorted_list(num1, num2, num3):
    import heapq
    num1 = sorted(num1)
   
    num2 = sorted(num2)
    num3 = sorted(num3)
    result = heapq.merge(num1, num2, num3)
    return list(result)