for (int c0 = -99; c0 <= 100; c0 += 1) {
if (c0 <= 0)
S1(1, -c0 + 1);
for (int c1 = max(1, -2 * c0 + 3); c1 <= min(199, -2 * c0 + 199); c1 += 2) {
S2(((c1 - 1) / 2) + c0, (c1 + 1) / 2);
S1(((c1 + 1) / 2) + c0, (c1 + 1) / 2);
}
if (c0 >= 1)
S2(100, -c0 + 101);
}