1 for (int c1 = 1; c1 <= M; c1 += 1) { 2 S1(c1); 3 for (int c2 = c1 + 1; c2 <= M; c2 += 1) 4 S4(c1, c2); 5 } 6 for (int c0 = 1; c0 < 3 * M - 1; c0 += 3) { 7 S3((c0 + 2) / 3); 8 for (int c1 = (c0 + 5) / 3; c1 <= M; c1 += 1) { 9 S6((c0 + 2) / 3, c1); 10 for (int c4 = (c0 + 5) / 3; c4 < c1; c4 += 1) 11 S5(c4, c1, (c0 + 2) / 3); 12 } 13 for (int c1 = (c0 + 5) / 3; c1 <= M; c1 += 1) 14 S2(c1, (c0 + 2) / 3); 15 } 16