13 lines · c
1if (N >= 1) {2 for (int c1 = 1; c1 <= M; c1 += 1)3 S1(1, c1);4 for (int c0 = 2; c0 <= N; c0 += 1) {5 for (int c1 = 1; c1 <= M; c1 += 1)6 S2(c0 - 1, c1);7 for (int c1 = 1; c1 <= M; c1 += 1)8 S1(c0, c1);9 }10 for (int c1 = 1; c1 <= M; c1 += 1)11 S2(N, c1);12}13