vivien.c

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for (int c0 = -27 * n + 2; c0 <= 1; c0 += 1)
  S1(c0 - 1);
for (int c0 = 2; c0 <= min(2 * n, n + 29); c0 += 1) {
  if (c0 >= 3) {
    if (2 * n >= c0 + 1) {
      S4(c0 - c0 / 2 - 1, c0 / 2 + 1);
      if (c0 + 2 >= 2 * n) {
        for (int c2 = 1; c2 < -n + c0; c2 += 1)
          S5(-n + c0, n, c2);
      } else if (c0 >= 5) {
        S4(c0 - c0 / 2 - 2, c0 / 2 + 2);
        for (int c2 = 1; c2 < c0 - c0 / 2 - 1; c2 += 1)
          S5(c0 - c0 / 2 - 1, c0 / 2 + 1, c2);
      }
    }
    for (int c1 = -c0 + c0 / 2 + 3; c1 <= min(-1, n - c0); c1 += 1) {
      S4(-c1, c0 + c1);
      S6(-c1 + 2, c0 + c1 - 2);
      for (int c2 = 1; c2 <= -c1; c2 += 1)
        S5(-c1 + 1, c0 + c1 - 1, c2);
    }
    if (2 * n >= c0 + 3 && c0 >= n + 2) {
      S6(-n + c0 + 1, n - 1);
      for (int c2 = 1; c2 < -n + c0; c2 += 1)
        S5(-n + c0, n, c2);
    }
    if (c0 >= n + 3 && 2 * n >= c0 + 1)
      S6(-n + c0, n);
    if (c0 >= n + 3) {
      S1(c0 - 1);
    } else {
      if (n + 1 >= c0 && c0 <= 4) {
        S1(c0 - 1);
      } else if (c0 >= 5 && n + 1 >= c0) {
        S1(c0 - 1);
        S6(2, c0 - 2);
      }
      if (n + 1 >= c0) {
        S6(1, c0 - 1);
      } else if (n >= 3) {
        S1(n + 1);
        S6(2, n);
      }
    }
    if (n == 2 && c0 == 4)
      S1(3);
  } else {
    S1(1);
  }
  if (c0 % 2 == 0)
    S3(c0 / 2);
  for (int c1 = max(1, -n + c0); c1 < (c0 + 1) / 2; c1 += 1)
    S2(c0 - c1, c1);
}
for (int c0 = max(2 * n + 1, -27 * n + 2); c0 <= n + 29; c0 += 1)
  S1(c0 - 1);
for (int c0 = n + 30; c0 <= 2 * n; c0 += 1) {
  if (2 * n >= c0 + 1) {
    S4(c0 - c0 / 2 - 1, c0 / 2 + 1);
    if (c0 + 2 >= 2 * n) {
      for (int c2 = 1; c2 < -n + c0; c2 += 1)
        S5(-n + c0, n, c2);
    } else {
      S4(c0 - c0 / 2 - 2, c0 / 2 + 2);
      for (int c2 = 1; c2 < c0 - c0 / 2 - 1; c2 += 1)
        S5(c0 - c0 / 2 - 1, c0 / 2 + 1, c2);
    }
    for (int c1 = -c0 + c0 / 2 + 3; c1 <= n - c0; c1 += 1) {
      S4(-c1, c0 + c1);
      S6(-c1 + 2, c0 + c1 - 2);
      for (int c2 = 1; c2 <= -c1; c2 += 1)
        S5(-c1 + 1, c0 + c1 - 1, c2);
    }
    if (2 * n >= c0 + 3) {
      S6(-n + c0 + 1, n - 1);
      for (int c2 = 1; c2 < -n + c0; c2 += 1)
        S5(-n + c0, n, c2);
    }
    S6(-n + c0, n);
  }
  if (c0 % 2 == 0)
    S3(c0 / 2);
  for (int c1 = -n + c0; c1 < (c0 + 1) / 2; c1 += 1)
    S2(c0 - c1, c1);
}