Untitled

#include <iostream>
using namespace std;

int main() {
	setlocale(LC_ALL, "Russian");
	int a, b, c = 0;
	cin >> a >> b;
	for (int i = a; i <= b; i++) {
		while (i > 99) {
			i /= 10;
		}
		if (i % 11 == 0) {
			c += 1;
		}
	}
	cout << c;
}