class Solution {
public:
    int subsetXORSum(vector<int>& nums) {
        int ans=0;
        int size=nums.size();
        if(size=0){
            return 0;
        }
        vector<int> vec(++(nums.begin()),nums.end());
        int temp=subsetXORSum(vec);
        ans=ans+temp+(nums[0]^temp);

        return temp;
    }
};