import java.util.Scanner;

public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		int a = sc.nextInt();
		int b = sc.nextInt();

		System.out.println(a == b ? 2 * a : 2 * Math.max(a, b) - 1);
	}
} import java.util.Scanner; Scanner java.util public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		int a = sc.nextInt();
		int b = sc.nextInt();

		System.out.println(a == b ? 2 * a : 2 * Math.max(a, b) - 1);
	}
} Main public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		int a = sc.nextInt();
		int b = sc.nextInt();

		System.out.println(a == b ? 2 * a : 2 * Math.max(a, b) - 1);
	} main {

		Scanner sc = new Scanner(System.in);

		int a = sc.nextInt();
		int b = sc.nextInt();

		System.out.println(a == b ? 2 * a : 2 * Math.max(a, b) - 1);
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int a = sc.nextInt(); a sc.nextInt() sc.nextInt sc int b = sc.nextInt(); b sc.nextInt() sc.nextInt sc System.out.println(a == b ? 2 * a : 2 * Math.max(a, b) - 1) System.out.println System.out System System.out a == b ? 2 * a : 2 * Math.max(a, b) - 1 a == b a b 2 * a 2 a 2 * Math.max(a, b) - 1 2 * Math.max(a, b) 2 Math.max(a, b) Math.max Math a b 1 String[] args args public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		int a = sc.nextInt();
		int b = sc.nextInt();

		System.out.println(a == b ? 2 * a : 2 * Math.max(a, b) - 1);
	}
} public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		int a = sc.nextInt();
		int b = sc.nextInt();

		System.out.println(a == b ? 2 * a : 2 * Math.max(a, b) - 1);
	}
} Main
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		int a = sc.nextInt();
		int b = sc.nextInt();

		System.out.println(a == b ? 2 * a : 2 * Math.max(a, b) - 1);
	}
}