#include<stdio.h>
int main()
{
    int a,b,c;
    scanf("%d %d",&a,&b);
    if(b%2==1 && b!=7)
    {
        printf("30");
    }
    else if(b%2==0 && b!=2)
    {
        printf("31");
    }
    else if(b==2)
    {
          if(a%400==0)
        {
            printf("28");
        }
        else if(a%4==0 && a%100!=0)
        {
            printf("28");
        }
        else 
        printf("29");
    }
    else if(b==7)
    {
        printf("31");
    }
}

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