Two Sum II - Input array is sorted

class Solution {
public:
    vector<int> twoSum(vector<int>& numbers, int target) {
       int l = 0, r = numbers.size() - 1;
        while(l < r){
            if(numbers[r] + numbers[l] == target) return {l + 1, r +  1};
            (numbers[l] + numbers[r] > target ? r-- : l++);
        }
        return {-1};
    }
};