import java.util.*;
public class Main {
    public static void main(String[] args) {
        int arr[] ={4, 2, 2, 6, 4};
        int k = 6;
        int count =0;
        for(int i =0; i< arr.length; i++){
            int xor =0;
            for(int j =i; j< arr.length; j++){
                xor ^= arr[j];
                if(xor == k){
                    count++;
                }
            }
        }
        System.out.println(count);
 
    }
}

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