include <bits/stdc++.h>

using namespace std;

int main() {

int a, b;
cin >> a >> b;
if (a % 4 == 0 && (a % 100 != 0 || a % 400 == 0)) {
	if (b == 1 || b == 3 || b == 5 || b == 7 || b == 8 || b == 10 || b == 12) {
		cout << "31";
	} else if (b == 4 || b == 6 || b == 9 || b == 11) {
		cout << "30";
	} else {
		cout << "29";
	}
} else {
	if (b == 1 || b == 3 || b == 5 || b == 7 || b == 8 || b == 10 || b == 12) {
		cout << "31";
	} else if (b == 4 || b == 6 || b == 9 || b == 11) {
		cout << "30";
	} else {
		cout << "28";
	}
}
return 0;

}