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

#define rep(i, a, b) for (ll i = a; i < b; i++)
using ll = long long;

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