include <bits/stdc++.h>

using namespace std;

using namespace std;

int main() {

int year, month; cin >> year >> month; int month_days[] = {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}; if (month == 2) {

if ((year % 400 == 0) || (year % 4 == 0 && year % 100 != 0)) {
    cout << 29 << endl;
} else {
    cout << 28 << endl;
}

} else {

cout << month_days[month] << endl;

}

return 0; }