UVA 12643 - Tennis Rounds

#include <bits/stdc++.h>
#include <math.h>
#include<string>
#define pi acos(-1.0)
#define ll long long int
#define sc scanf
#define pf printf

using namespace std;

int main() {
    ll n, i, j, r;
    while(sc("%lld %lld %lld", &n, &i, &j)==3) {
        i=(i-1)/2;
        j=(j-1)/2;
        for(r=1; i!=j; r++) {
            i/=2;
            j/=2;
        }
        cout << r << "\n";
    }
    return 0;
}