class Solution {
public:
    vector<int> twoSum(vector<int>& nums, int target) {
        vector<int> res;
        for(int i = 0;i < nums.size(); i++) {
            for(int j = i+1;j < nums.size();j++) {
                if (nums[i] + nums[j] == target) {
                    res.push_back(i); 
                    res.push_back(j); 
                    return res;
                }
            }
        }
        return res;
    }
};
