hihocoder 1498

#include "iostream"
#include "string.h"
#include "stack"
#include "queue"
#include "string"
#include "vector"
#include "set"
#include "map"
#include "algorithm"
#include "stdio.h"
#include "math.h"
#define ll long long
#define bug(x) cout<<x<<" "<<"UUUUU"<<endl;
#define mem(a) memset(a,0,sizeof(a))
using namespace std;
const int N=1e5+100;
ll n,q,t,k,ans=1e18;
int main(){
    cin>>n>>q;
    for(int i=0; i<64; ++i){
        ll c=1LL<<i;
        if(n%c!=0) t=1;
        else t=0;
        t+=i*q+n/c;
        ans=min(ans,t);
    }
    cout<<ans;
    return 0;
}