vector<int> twoSum(vector<int>& nums, int target) {
            int n = nums.size();
             vector<int>p;
           for(int i=0;i<n;i++){
                for(int j=i+1;j<n;j++){
                    if(nums[i]+nums[j]==target){
                        p.push_back(i);
                        p.push_back(j);

                    }
                }
            }
        return p;
    }