namespace Prac7Meow
{
    internal class Utils
    {
        public static int NearPow(int n)
        { 
            if (n == 0) return 0;
            if (n <= 2) return 2;

            uint val = (uint)n;

            val--;
            val |= val >> 1;
            val |= val >> 2;
            val |= val >> 4;
            val |= val >> 8;
            val |= val >> 16;
            val++;

            if (val == 0) throw new OverflowException("Requested capacity is too large for int.");

            return (int)val;
        }
    }
}