Codeforces Round #295 (Div. 2) 520B - Two Buttons Solution

 

Solution in C++:

///La ilaha illellahu muhammadur rasulullah

///******Bismillahir-Rahmanir-Rahim******///

///Abul Hasnat  Tonmoy

///Department of CSE,23rd batch

///Islamic University,Bangladesh

#include <bits/stdc++.h>

using namespace std;

int main()

{

    long long n,m,cn=0;

    cin>>n>>m;

    while(n!=m)

    {

        cn++;

        if(m<n||m%2!=0)

            m++;

        else

            m=m/2;

    }

    cout<<cn<<endl;

}