import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int A = sc.nextInt();
		int B = sc.nextInt();
		boolean plusA = (A % 10000 / 1000) * 10 + (A / 10000) >= (A % 100);
		boolean plusB = (B % 10000 / 1000) * 10 + (B / 10000) <= (B % 100);
		System.out.println((B / 100) - (A / 100) - 1 + (plusA ? 1 : 0) + (plusB ? 1 : 0));
	}
}

/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz