using System;

class B
{
	static int[] Read() => Array.ConvertAll(Console.ReadLine().Split(), int.Parse);
	static (int, int) Read2() { var a = Read(); return (a[0], a[1]); }
	static void Main()
	{
		var (m, d) = Read2();
		if ((m, d) == (4, 1)) Console.WriteLine(0);
		else Console.WriteLine(m + d);
	}
}