#include <bits/stdc++.h>//if
using namespace std;
int main()
{
    int a, b;
    bool flag = false;
    cin >> a >> b;
    if((a % 4 == 0 && a % 100 != 0) || a % 400 == 0)
    {
        flag = true;
    }
    if(b == 1)
    {
        cout << "31";
    }
    if(b == 2 && flag)
    {
        cout << "29";
    }
    else
    {
        cout << "28";
    }
    if(b == 3)
    {
        cout << "31";
    }
    if(b == 4)
    {
        cout << "30";
    }
    if(b == 5)
    {
        cout << "31";
    }
    if(b == 6)
    {
        cout << "30";
    }
    if(b == 7)
    {
        cout << "31";
    }
    if(b == 8)
    {
        cout << "31";
    }
    if(b == 9)
    {
        cout << "30";
    }
    if(b == 10)
    {
        cout << "31";
    }
    if(b == 11)
    {
        cout << "30";
    }
    if(b == 12)
    {
        cout << "31";
    }
    return 0;
}