润色：The basic idea of the algorithm is to modify the rows or columns of the efficiency matrix so that there is at least one zero element in each row or column By modifying until there is at least one z

The algorithm works by adjusting the efficiency matrix's rows or columns until each one contains at least one zero element. This process continues until there are different rows and columns with at least one zero element. The resulting task allocation scheme corresponds to the positions of all zero elements and represents the optimal allocation in the efficiency matrix, minimizing the cost of the task.