3 ms·
Closed form that works for most cases: result = ((u * (u - 1)) / 2 * (100000/u)) + (100000%u * (100000%u - 1) / 2) + r)
by hatthew 2y ago
Closed form that works for most cases:
result = ((u * (u - 1)) / 2 * (100000/u)) + (100000%u * (100000%u - 1) / 2) + r)