# [1791\. Find Center of Star Graph](https://leetcode.com/problems/find-center-of-star-graph/)

:::spoiler Solution

class Solution {
public:
    int findCenter(vector<vector<int>>& edges)
    {
        vector<int> first = edges[0], second = edges[1];
        return (first[0] == second[0] || first[0] == second[1]) ? first[0] : first[1];
    }
};

- 時間複雜度：$O(1)$
- 空間複雜度：$O(1)$
:::