include

using namespace std;

int main() {

int y, m;
cin >> y >> m;
if (m == 1 || m == 3 || m == 5 || m == 7 || m == 8 || m == 10 || m == 12) {
	cout << 31;
} else if (m == 2) {
	if ((y % 4 == 0 && y % 100 != 0) || (y % 400 == 0)) {
		cout << 29;

	} else {
		cout << 28;
	}

} else if (m == 4 || m == 6 || m == 9 || m == 11) {
	cout << 30;
}
return 0;

}