13 lines · c
1for (int c0 = p; c0 <= min(m - 1, q); c0 += 1)2 S2(c0);3for (int c0 = m; c0 <= min(n, p - 1); c0 += 1)4 S1(c0);5for (int c0 = max(m, p); c0 <= min(n, q); c0 += 1) {6 S1(c0);7 S2(c0);8}9for (int c0 = max(max(m, n + 1), p); c0 <= q; c0 += 1)10 S2(c0);11for (int c0 = max(max(m, p), q + 1); c0 <= n; c0 += 1)12 S1(c0);13