题解 | 二叉树

#include <iostream>
using namespace std;

int main() {
    int x, y;
    while(cin >> x >> y){
        while(x != y){
            if(x>y && x>=2){
                x/=2;
            }else if(x<y && y>=2){
                y/=2;
            }
        }
        cout << x << endl;
    }
}