#include <iostream>

using namespace std;

int solution(int n, int a, int b)
{
    int answer = 1;

    while(n>2){
        if(a%2 == 1){ //홀수일때
            if(b == a+1){
                break;
            }
            a = (a+1)/2;
        }
        else { //짝수일때
            if(b == a-1){
                break;
            }
            a = a/2;
        }
        
        if(b%2 == 1){
            b = (b+1)/2;
        }
        else {
            b = b/2;
        }
        answer++;
    }

    return answer;
}