using static System.Console;

using System.Numerics;

​

public class Program {

    public static void Main() {

        WriteLine(VerificaPermissao((BigInteger)1, (BigInteger)0));

        WriteLine(VerificaPermissao((BigInteger)1, (BigInteger)1));

        WriteLine(VerificaPermissao((BigInteger)2, (BigInteger)1));

    }

    public static bool VerificaPermissao(BigInteger perm1, BigInteger perm) => (perm & perm1) != 0;

}