# Write your max_num function here:
def max_num(num1, num2, num3):
  max = num1
  tie = ""

  for num in [num2, num3]:
    if num == max:
      tie = "It's a tie!"
    elif num > max:
      max = num
  if tie != "":
    return tie
  else:
    return max
# Uncomment these function calls to test your max_num function:
print(max_num(-10, 0, 10))
# should print 10
print(max_num(-10, 5, -30))
# should print 5
print(max_num(-5, -10, -10))
# should print -5
print(max_num(2, 3, 3))
# should print "It's a tie!"