#include <stdio.h>

int main()
{
    int a,b;
    int arr1[12]={31,28,31,30,31,30,31,31,30,31,30,31};
    int arr2[12]={31,29,31,30,31,30,31,31,30,31,30,31};
    while(scanf("%d %d",&a,&b)!=EOF)
    {
        if((a%4==0&&a%100!=0)||(a%400==0))
        {
            for(int i=0;i<12;i++)
            {
                if(b==(i+1))
                {
                    printf("%d\n",arr2[i]);
                }
            }
        }
        else
        {
            for(int i=0;i<12;i++)
            {
                if(b==(i+1))
                {
                    printf("%d\n",arr1[i]);
                }
            }
        }
    }
    return 0;
}