Untitled

#include <iostream>

using namespace std;

int main() {
	int a, b;
	cin >> a >> b;
	int count = 0;
	for (int i = a; i <= b; i++) {
		if (i % 10 == (i / 10) % 10) {
			count += 1;
		}
	}
	cout << count;
}