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: Number ODF Fare Demand Istanbul to Doha full fare $300 90 2 Istanbul to Doha discount fare $250 60 3 Doha to Perth full fare $1100 100 4 Doha to Perth discount fare $900 150 5 Istanbul to Perth full fare $1200 50 6 Istanbul to Perth discount fare $1000 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