import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int a=scan.nextInt();
		int b=scan.nextInt();
		if(a==b) System.out.println(a+b);
		else System.out.println((Math.max(a,b)*2)-1);

	}

} import java.util.Scanner; Scanner java.util public class Main {

	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int a=scan.nextInt();
		int b=scan.nextInt();
		if(a==b) System.out.println(a+b);
		else System.out.println((Math.max(a,b)*2)-1);

	}

} Main public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int a=scan.nextInt();
		int b=scan.nextInt();
		if(a==b) System.out.println(a+b);
		else System.out.println((Math.max(a,b)*2)-1);

	} main {
		Scanner scan = new Scanner(System.in);
		int a=scan.nextInt();
		int b=scan.nextInt();
		if(a==b) System.out.println(a+b);
		else System.out.println((Math.max(a,b)*2)-1);

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

	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int a=scan.nextInt();
		int b=scan.nextInt();
		if(a==b) System.out.println(a+b);
		else System.out.println((Math.max(a,b)*2)-1);

	}

} public class Main {

	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int a=scan.nextInt();
		int b=scan.nextInt();
		if(a==b) System.out.println(a+b);
		else System.out.println((Math.max(a,b)*2)-1);

	}

} Main
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int a=scan.nextInt();
		int b=scan.nextInt();
		if(a==b) System.out.println(a+b);
		else System.out.println((Math.max(a,b)*2)-1);

	}

}
