1for (int c0 = 0; c0 <= M; c0 += 1) {2 for (int c1 = 0; c1 <= min(N, c0); c1 += 1) {3 S1(c0, c1);4 S2(c0, c1);5 }6 for (int c1 = N + 1; c1 <= c0; c1 += 1)7 S1(c0, c1);8}9
