#include<bits/stdc++.h>
using namespace std;
using ll =long long;

int main(){
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    ll L,R;
    cin>>L>>R;
    int an=0;
    if(L<=295&&295<R)an++;
    if(L<=416&&416<R)an++;
    cout<<an<<"\n";
}