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

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    int l, r;
    cin >> l >> r;
    int ans = 0;
    ans += (l <= 295 && 296 <= r);
    ans += (l <= 416 && 417 <= r);
    cout << ans << '\n';
}