Solution for the problem of P1

1: InitializeQ₀;

2: Start to solve alternately, the number of iterations is l;

3: Solve theA_l in the P2 problem according to Q_l-1 at this time;

4: SolveQ_l in P3 problem from A_l in P2;

5: Number of iterations l = l + 1;

6: The objective function is reduced to a certain extent, stop iteration.