use proconio::input;

fn main() {
	input! {
		l: usize,
		r: usize,
	}
	
    let mut ans = 0;

    if l <= 295 && 296 <= r {
        ans += 1;
    }

    if l <= 416 && 417 <= r {
        ans += 1;
    }

    println!("{ans}");	
}