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();

		int list[] = {a, b};
		int sum = 0;

		for(int i=0; i<2; i++){
			if(list[0] > list[1]){
				sum += list[0];
				list[0]--;
			}else{
				sum += list[1];
				list[1]--;
			}
		}

		System.out.println(sum);
    }
} 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();

		int list[] = {a, b};
		int sum = 0;

		for(int i=0; i<2; i++){
			if(list[0] > list[1]){
				sum += list[0];
				list[0]--;
			}else{
				sum += list[1];
				list[1]--;
			}
		}

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

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

		int list[] = {a, b};
		int sum = 0;

		for(int i=0; i<2; i++){
			if(list[0] > list[1]){
				sum += list[0];
				list[0]--;
			}else{
				sum += list[1];
				list[1]--;
			}
		}

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

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

		int list[] = {a, b};
		int sum = 0;

		for(int i=0; i<2; i++){
			if(list[0] > list[1]){
				sum += list[0];
				list[0]--;
			}else{
				sum += list[1];
				list[1]--;
			}
		}

		System.out.println(sum);
    } 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 int list[] = {a, b}; list {a, b} a b int sum = 0; sum 0 for(int i=0; i<2; i++){
			if(list[0] > list[1]){
				sum += list[0];
				list[0]--;
			}else{
				sum += list[1];
				list[1]--;
			}
		} int i=0; int i=0; i 0 i<2 i 2 i++ i++ i {
			if(list[0] > list[1]){
				sum += list[0];
				list[0]--;
			}else{
				sum += list[1];
				list[1]--;
			}
		} {
			if(list[0] > list[1]){
				sum += list[0];
				list[0]--;
			}else{
				sum += list[1];
				list[1]--;
			}
		} if(list[0] > list[1]){
				sum += list[0];
				list[0]--;
			}else{
				sum += list[1];
				list[1]--;
			} list[0] > list[1] list[0] list 0 list[1] list 1 {
				sum += list[0];
				list[0]--;
			} sum += list[0] sum list[0] list 0 list[0]-- list[0] list 0 {
				sum += list[1];
				list[1]--;
			} sum += list[1] sum list[1] list 1 list[1]-- list[1] list 1 System.out.println(sum) System.out.println System.out System System.out sum 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();

		int list[] = {a, b};
		int sum = 0;

		for(int i=0; i<2; i++){
			if(list[0] > list[1]){
				sum += list[0];
				list[0]--;
			}else{
				sum += list[1];
				list[1]--;
			}
		}

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

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

		int list[] = {a, b};
		int sum = 0;

		for(int i=0; i<2; i++){
			if(list[0] > list[1]){
				sum += list[0];
				list[0]--;
			}else{
				sum += list[1];
				list[1]--;
			}
		}

		System.out.println(sum);
    }
} 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();

		int list[] = {a, b};
		int sum = 0;

		for(int i=0; i<2; i++){
			if(list[0] > list[1]){
				sum += list[0];
				list[0]--;
			}else{
				sum += list[1];
				list[1]--;
			}
		}

		System.out.println(sum);
    }
}