#include <bits/stdc++.h>
using namespace std;
int main()
{
    int L, R;
    cin >> L >> R;
    int ans = 1;
    if (L <= 295 && 417 <= R)
        ans = 2;
    else if (R <= 295)
        ans = 0;
    else if (417 <= L)
        ans = 0;
    else if (296 <= L && R <= 416)
        ans = 0;
    cout << ans << endl;
    return 0;
}