#include<iostream>
using namespace std;
int main()
{
    unsigned long long l,r;
    cin>>l>>r;
    unsigned long long a=2;
    for(int i=0;i<19;i++)
    {
        if(l<=a)
        {
            if(r>=a+(unsigned long long)1)
                cout<<2;
            else
                cout<<1;
            break;
        }
        else
        {
            a*=10;
            a+=9;
        }
    }
    return 0;
}