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