#include <atcoder/all>
#include <bits/stdc++.h>
#include <float.h>


using namespace std;
using namespace atcoder;

using ll = long long;
using v_int = vector<int>;
using v_ll = vector<long long>;
using vv_int = vector<vector<int>>;
using vv_ll = vector<vector<long long>>;
using p_ii = pair<int,int>;
using p_ll = pair<ll,ll>;
using v_string = vector<string>;
#define rep(i, n) for (ll i = 0; i < (int)(n); i++)
#define ALL(a) (a).begin(), (a).end()

int main(){
    ll L,R;
    cin >> L >> R;
    ll ans = 0;
    if( L <= 295&&296<=R)ans++;
    if(L<=416&&417<=R)ans++;
    cout<< ans << endl;
}