Paying up ,MARCHA1 ,Wrong Answer...please help me..

import java.io.*;
import java.util.*;
public class Main{
public static void main(String[] args) throws Exception{
BufferedReader s= new BufferedReader(new InputStreamReader(System.in));
int n;
n=Integer.parseInt(s.readLine());
for(int t=0;t<n;t++){
String[] m;
m=s.readLine().split(" ");
int value=Integer.valueOf(m[1]);
int[] v=new int[Integer.valueOf(m[0])];
int pa=Integer.valueOf(m[0]);
if(Integer.valueOf(m[0])>20)
{
    break;
}
for(int i=0;i<Integer.valueOf(m[0]);i++){
        int cv =Integer.parseInt(s.readLine());
        if(cv>1000){
            break;
        }else{
            v[i]=cv;
        }
}
Arrays.sort(v);
boolean ca=false;
for(int i=1;i<=Math.pow(2,pa);i++){
    int sum=0;
                for(int j=0;j<pa;j++){
                               if((i & (1<<j))!=0){
                                        sum=sum+v[j];
                                }
                if(sum==value){
                ca=true;
                break;
                }
                }
    if(sum==value){
    ca=true;
    break;
    }
}
if(ca==true){System.out.println("Yes");}else{System.out.println("No");}
}}}