#798 · #1029 · Two City Scheduling(两地调度)

A company must send 2n people to two cities, n to each. costs[i] = [costA, costB] is the cost of sending person i to city A or city B. Return the minimum total cost. Constraints: 2 <= costs.length <= 100 and costs.length is even, 1 <= costs[i][0], costs[i][1] <= 1000.