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#include <iostream>
#include <cstdlib>

using namespace std;

int div(int n)
{
    return n/2 + n%2;
}

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

    while(abs(a-b) != 1)
    {
        a = div(a);
        b = div(b);

        answer++;
    }

    return answer;
}