import java.util.Scanner;

public class Main
{

	public static void main(String[] args)
	{
		Scanner sc = new Scanner(System.in);

		int a = Integer.parseInt(sc.next());
		int b = Integer.parseInt(sc.next());
		int answer = (a - b > 0) ? a + (a - 1) :
					 (b - a > 0) ? b + (b - 1) :
						 		   a + b;

		System.out.println(answer);
		sc.close();
	}
} import java.util.Scanner; Scanner java.util public class Main
{

	public static void main(String[] args)
	{
		Scanner sc = new Scanner(System.in);

		int a = Integer.parseInt(sc.next());
		int b = Integer.parseInt(sc.next());
		int answer = (a - b > 0) ? a + (a - 1) :
					 (b - a > 0) ? b + (b - 1) :
						 		   a + b;

		System.out.println(answer);
		sc.close();
	}
} Main public static void main(String[] args)
	{
		Scanner sc = new Scanner(System.in);

		int a = Integer.parseInt(sc.next());
		int b = Integer.parseInt(sc.next());
		int answer = (a - b > 0) ? a + (a - 1) :
					 (b - a > 0) ? b + (b - 1) :
						 		   a + b;

		System.out.println(answer);
		sc.close();
	} main {
		Scanner sc = new Scanner(System.in);

		int a = Integer.parseInt(sc.next());
		int b = Integer.parseInt(sc.next());
		int answer = (a - b > 0) ? a + (a - 1) :
					 (b - a > 0) ? b + (b - 1) :
						 		   a + b;

		System.out.println(answer);
		sc.close();
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int a = Integer.parseInt(sc.next()); a Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc int b = Integer.parseInt(sc.next()); b Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc int answer = (a - b > 0) ? a + (a - 1) :
					 (b - a > 0) ? b + (b - 1) :
						 		   a + b; answer (a - b > 0) ? a + (a - 1) :
					 (b - a > 0) ? b + (b - 1) :
						 		   a + b (a - b > 0) a - b a b 0 a + (a - 1) a (a - 1) a 1 (b - a > 0) ? b + (b - 1) :
						 		   a + b (b - a > 0) b - a b a 0 b + (b - 1) b (b - 1) b 1 a + b a b System.out.println(answer) System.out.println System.out System System.out answer sc.close() sc.close sc String[] args args public class Main
{

	public static void main(String[] args)
	{
		Scanner sc = new Scanner(System.in);

		int a = Integer.parseInt(sc.next());
		int b = Integer.parseInt(sc.next());
		int answer = (a - b > 0) ? a + (a - 1) :
					 (b - a > 0) ? b + (b - 1) :
						 		   a + b;

		System.out.println(answer);
		sc.close();
	}
} public class Main
{

	public static void main(String[] args)
	{
		Scanner sc = new Scanner(System.in);

		int a = Integer.parseInt(sc.next());
		int b = Integer.parseInt(sc.next());
		int answer = (a - b > 0) ? a + (a - 1) :
					 (b - a > 0) ? b + (b - 1) :
						 		   a + b;

		System.out.println(answer);
		sc.close();
	}
} Main
import java.util.Scanner;

public class Main
{

	public static void main(String[] args)
	{
		Scanner sc = new Scanner(System.in);

		int a = Integer.parseInt(sc.next());
		int b = Integer.parseInt(sc.next());
		int answer = (a - b > 0) ? a + (a - 1) :
					 (b - a > 0) ? b + (b - 1) :
						 		   a + b;

		System.out.println(answer);
		sc.close();
	}
}