include

using namespace std;

int main() {

int m, t, z = 0, b = 0, j = 0, p = 0;
cin >> m >> t;
for (int i = 1; i <= m; i++) {
	b = i;
	while (b > 0) {
		j = b % 10;
		b = b / 10;
		if (j == t) {
			p++;
			break;
		}
	}
	if (p == 0) {
		z++;
	}
	p = 0;
	j = 0;
}
cout << z;
return 0;

}