def mysum(n, m=1):
      if n == m:
          return m
      else:
          return n + mysum(n - 1, m)
  
  
  print(mysum(3))
  print(mysum(5))
  print(mysum(200, 199))
  print(mysum(6, m=2))
  print(mysum(5, m=3))