Day29_Bitwise AND

import java.io.*;
import java.math.*;
import java.security.*;
import java.text.*;
import java.util.*;
import java.util.concurrent.*;
import java.util.function.*;
import java.util.regex.*;
import java.util.stream.*;
import static java.util.stream.Collectors.joining;
import static java.util.stream.Collectors.toList;

class Result {

   

    public static int bitwiseAnd(int N, int K) {
       
       int max=0;
        
       
       int and=0;
        for(int i=1;i<=N;i++)
        {
            for(int j=i+1;j<=N;j++)
            {
                and=i&j;
                
                if(and<K && and>max)
                {
                    max=and;
                }
                
            }
           
            
        }   
        return max;
        
    }
    
}

public class Solution {
    public static void main(String[] args) throws IOException {
        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter(System.getenv("OUTPUT_PATH")));

        int t = Integer.parseInt(bufferedReader.readLine().trim());

        IntStream.range(0, t).forEach(tItr -> {
            try {
                String[] firstMultipleInput = bufferedReader.readLine().replaceAll("\\s+$", "").split(" ");

                int count = Integer.parseInt(firstMultipleInput[0]);

                int lim = Integer.parseInt(firstMultipleInput[1]);

                int res = Result.bitwiseAnd(count, lim);

                bufferedWriter.write(String.valueOf(res));
                bufferedWriter.newLine();
            } catch (IOException ex) {
                throw new RuntimeException(ex);
            }
        });

        bufferedReader.close();
        bufferedWriter.close();
    }
}