import java.util.Scanner;

public class Main{
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		if(b==1||b==3||b==5||b==7||b==8||b==10||b==12) {
			System.out.println(31);
		}else if(b==4||b==6||b==9||b==11) {
			System.out.println(30);
		}else if(b==2) {
			if(a%4==0&&a%100!=0||a%400==0) {
				System.out.println(29);
			}else {
				System.out.println(28);
			}
		}
	}
}
/**************************************************************
	Problem: 1867
	User: admin
	Language: Java
	Result: Accepted
	Time:7639 ms
	Memory:40076 kb
****************************************************************/