#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef string str;
int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    ll l, r;
    cin >> l >> r;
    ll ans = 0;
    if (l <= 295 && 296 <= r) ans++;
    if (l <= 416 && 417 <= r) ans++;
    cout << ans << "\n";
    return 0;
}