1 for (int c0 = 0; c0 <= 14; c0 += 1) 2 for (int c1 = 0; c1 < n - 14; c1 += 1) 3 S1(c0, c1); 4 for (int c0 = 15; c0 <= n; c0 += 1) { 5 for (int c1 = 0; c1 <= 9; c1 += 1) 6 S1(c0, c1); 7 for (int c1 = 10; c1 < n - 14; c1 += 1) { 8 S1(c0, c1); 9 S2(c0, c1); 10 } 11 for (int c1 = n - 14; c1 <= n; c1 += 1) 12 S2(c0, c1); 13 } 14