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