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());
        if(a == b){
            System.out.println(2*a);
        }else{
            System.out.println(Math.max(a,b)*2-1);
        }
        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());
        if(a == b){
            System.out.println(2*a);
        }else{
            System.out.println(Math.max(a,b)*2-1);
        }
        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());
        if(a == b){
            System.out.println(2*a);
        }else{
            System.out.println(Math.max(a,b)*2-1);
        }
        sc.close();
    } main {
        Scanner sc = new Scanner(System.in);
        int a = Integer.parseInt(sc.next());
        int b = Integer.parseInt(sc.next());
        if(a == b){
            System.out.println(2*a);
        }else{
            System.out.println(Math.max(a,b)*2-1);
        }
        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 if(a == b){
            System.out.println(2*a);
        }else{
            System.out.println(Math.max(a,b)*2-1);
        } a == b a b {
            System.out.println(2*a);
        } System.out.println(2*a) System.out.println System.out System System.out 2*a 2 a {
            System.out.println(Math.max(a,b)*2-1);
        } 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 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());
        if(a == b){
            System.out.println(2*a);
        }else{
            System.out.println(Math.max(a,b)*2-1);
        }
        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());
        if(a == b){
            System.out.println(2*a);
        }else{
            System.out.println(Math.max(a,b)*2-1);
        }
        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());
        if(a == b){
            System.out.println(2*a);
        }else{
            System.out.println(Math.max(a,b)*2-1);
        }
        sc.close();
    }

}