What is the available vector for each resource and the need matrix for each thread. Note that an available vector depicts the quantities of resources of each type that are available in the system after current allocation. The need matrix depicts of the quantities of resources of each type still needed by each thread, with each column corresponding to a thread and each row corresponding to a resource and an entry in location [i, j] of the matrix showing the quantity of a resource rj still needed by a thread ti.