two sum

class Solution {
public:
    vector<int> twoSum(vector<int>& numbers, int target) {
        for(int i=1;i<numbers.size();i++){
          int d=target-numbers[i];
    int l=lower_bound(numbers.begin(),numbers.begin()+i-1,d)-numbers.begin();
     if(l<numbers.size() && numbers[l]==d)
         return{l+1,i+1};
        }
        return {-1,-1};
    }
};