input: Write a function to calculate the compound interest given the investment amount, the rate of interest, and the time in years. If the investment amount, rate of interest, or time is negative, return "Invalid input". The function should return the compound interest rounded to two decimal places.
  
  def compoundInterest(investment_amount, rate_of_interest, time):
      if investment_amount < 0 or rate_of_interest < 0 or time < 0:
          return "Invalid input"
      compound_interest = investment_amount * (pow((1 + rate_of_interest / 100), time))
      return round(compound_interest, 2)
  
  assert compoundInterest(1000, 5, 5) == 1276.28
  assert compoundInterest(1000, -5, 5) == "Invalid input"
  assert compoundInterest(-1000, 5, 5) == "Invalid input"
  assert compoundInterest(1000, 5, -5) == "Invalid input"
  assert compoundInterest(0, 5, 5) == 0.0
output: def compoundInterest(investment_amount, rate_of_interest, time):
      if investment_amount < 0 or rate_of_interest < 0 or time < 0:
          return "Invalid input"
      compound_interest = investment_amount * (pow((1 + rate_of_interest / 100), time))
      return round(compound_interest, 2)