如何在在线答题中添加题目的逻辑和算法题

#include <iostream>
#include <vector>
#include <unordered_map>

using namespace std;

vector<int> twoSum(vector<int>& nums, int target) {
    unordered_map<int, int> map;
    vector<int> result;
    
    for (int i = 0; i < nums.size(); i++) {
        int complement = target - nums[i];
        if (map.find(complement) != map.end()) {
            result.push_back(map[complement]);
            result.push_back(i);
            return result;
        }
        map[nums[i]] = i;
    }
    
    return result;
}

int main() {
    vector<int> nums = {2, 7, 11, 15};
    int target = 9;
    vector<int> result = twoSum(nums, target);
    
    cout << "Result: ";
    for (int i = 0; i < result.size(); i++) {
        cout << result[i] << " ";
    }
    cout << endl;
    
    return 0;
}