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;
}

//https://pt.stackoverflow.com/q/202352/101