Help me in solving PETSTORE problem

help
,
1

My issue

I don’t see why the my code is not passing the testcases. Does anybody see any mistakes in it?

My code

/* package codechef; // don't place package name! */

import java.util.*;
import java.lang.*;
import java.io.*;

/* Name of the class has to be "Main" only if the class is public. */
class Codechef
{
	public static void main (String[] args) throws java.lang.Exception
	{
		// your code goes here
		Scanner sc = new Scanner(System.in);
		int t = sc.nextInt();
		while(t-->0){
		    long n = sc.nextInt(),temp=0,sum=0;
		    
		    for(int i=0;i<n;i++){
		        temp = sc.nextLong();
		        sum^=temp;
		    }
		    if(sum==0){
		        System.out.println("YES");
		    }else{
		        System.out.println("NO");
		    }
		}
	}
}

Problem Link: Pet Store Practice Coding Problem - CodeChef

2

@ashishprakashp
xor logic won’t work dude.
try this example:-
3
1 2 3
it will be “No” but your code will print “Yes”.