Consider an example where four jobs (J1, J2, J3, and J4) need to be executed by four workers (W1, W2, W3, and W4), one job per worker. The matrix below shows the cost of assigning a certain worker to a certain job. The objective is to minimize the total cost of the assignment. Using Hungarian algorithm, show the contents of the cost matrix as it evolves.

	J1	J2	J3	J4
W1	15	13	14	17
W2	11	12	15	13
W3	18	12	10	11
W4	15	17	14	16