#include <iostream>
#include <cstdio>
#include <cstring>
#include <algorithm>
#include <cmath>
#include <map>
#include <queue>
#include <stack>
#include <vector>
#include <set>
#define LL long long
using namespace std;
const int INF=0x3f3f3f3f;
int main()
{
   // freopen("data.txt","r",stdin);
    LL a;LL b;
    cin>>a>>b;
    LL i=0;
    while(a<=b)
    {
        ++i;
        a<<=1;
    }
    cout<<i;
    return 0;
}
