using var rb1 = new Roaring32Bitmap();
using var rb2 = new Roaring32Bitmap();

rb1.AddMany([1, 2, 3, 4, 5, 100, 1000]);
rb1.Optimize();

rb2.AddMany([3, 4, 5, 7, 50]);
rb2.Optimize();

using var result = rb1.And(rb2);

Console.WriteLine(result.Contains(2));
Console.WriteLine(result.Contains(4));
Console.WriteLine(result.Contains(5));