#include <iostream>
using namespace std;
int main() {
    int year, month;
    cin >> year >> month;
    // 判断是否为闰年
    bool isLeap = false;
    if ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0)) {
        isLeap = true;
    }
    int days[13] = {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
    if (month == 2 && isLeap) {
        cout << 29 << endl;
    } else {
        cout << days[month] << endl;
    }
    return 0;
}