世纪闰年%400==0

import java.util.*;
public class Main {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int[] v1 = {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
        int[] v2 = {0, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
        while(sc.hasNext()){
            int y = sc.nextInt(), m = sc.nextInt();
            if(y%400 == 0 ||(y%4 == 0 && y %100 != 0)){
                System.out.println(v2[m]);
                continue;
            }
            System.out.println(v1[m]);
        }
    }
}