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