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