find-center-of-star-graph.cpp

// Time:  O(1)
// Space: O(1)

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