hdu 4577 X-Boxes 大数

import java.math.*;
import java.util.*;
public class Main {
public static void main(String arg[]){
BigInteger n,ans,sum;
Scanner cin = new Scanner(System.in);
int k,t=cin.nextInt();
while(t-->0){
n=cin.nextBigInteger();
k=cin.nextInt();
ans=BigInteger.ZERO;
while(true){
n=n.divide(BigInteger.valueOf(1<<(k-1)));
sum=n.subtract(n.divide(BigInteger.valueOf(2)));
if(sum.equals(BigInteger.ZERO)) break;
ans=ans.add(sum);
n=n.divide(BigInteger.valueOf(2));
}
System.out.println(ans);
}
}
}