Problem 4 (1 pt) An airline is operating the two-flight network as below: Istanbul Doha Perth The capacities of these flights are as follows: Istanbul-Doha: 200-seat Doha-Perth: 300-seat Assume that we know the future demand for every ODF with certainty. Demands and fares are as follows: ODF Fare Demand Istanbul to Doha full fare Istanbul to Doha discount fare Doha to Perth full fare Doha to Perth discount fare Istanbul to Perth full fare Istanbul to Perth discount fare Number 1 $300 $250 $1100 $900 $1200 $1000 90 2 60 3 100 4 150 5 50 6 90 a) (0.6 pts) What are the unconstrained demand for these two flights? Note that unconstrained demand is the total number of customers for a particular flight that the manger could sell if accepting every booking request is possible (thus it can be well above the capacity). b) (0.4 pts) Determine whether or not the greedy heuristic will fail for this problem and explain why.