1for (int c0 = 1; c0 < n; c0 += 64)
2  for (int c1 = c0 - 1; c1 <= n; c1 += 64) {
3    for (int c2 = c0; c2 <= min(n, c0 + 63); c2 += 1) {
4      for (int c3 = c0; c3 <= min(c1 + 62, c2 - 1); c3 += 1)
5        for (int c4 = max(c3 + 1, c1); c4 <= min(c1 + 63, n); c4 += 1)
6          s1(c3, c4, c2);
7      for (int c4 = max(c2 + 1, c1); c4 <= min(n, c1 + 63); c4 += 1)
8        s0(c2, c4);
9    }
10    for (int c2 = c0 + 64; c2 <= n; c2 += 1)
11      for (int c3 = c0; c3 <= min(c0 + 63, c1 + 62); c3 += 1)
12        for (int c4 = max(c3 + 1, c1); c4 <= min(c1 + 63, n); c4 += 1)
13          s1(c3, c4, c2);
14  }
15