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();
    sc.close();
    int sum =0;
    
    if (a>=b) {sum += a;
    	a= a-1;}
    else {sum += b;
    	b= b-1;}
    if (a>=b) {sum += a;
	a= a-1;}
else {sum += b;
	b= b-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();
    sc.close();
    int sum =0;
    
    if (a>=b) {sum += a;
    	a= a-1;}
    else {sum += b;
    	b= b-1;}
    if (a>=b) {sum += a;
	a= a-1;}
else {sum += b;
	b= b-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();
    sc.close();
    int sum =0;
    
    if (a>=b) {sum += a;
    	a= a-1;}
    else {sum += b;
    	b= b-1;}
    if (a>=b) {sum += a;
	a= a-1;}
else {sum += b;
	b= b-1;}
    
   
   
   
      System.out.println(sum);
	} main {
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt(); int b = sc.nextInt();
    sc.close();
    int sum =0;
    
    if (a>=b) {sum += a;
    	a= a-1;}
    else {sum += b;
    	b= b-1;}
    if (a>=b) {sum += a;
	a= a-1;}
else {sum += b;
	b= b-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 sc.close() sc.close sc int sum =0; sum 0 if (a>=b) {sum += a;
    	a= a-1;}
    else {sum += b;
    	b= b-1;} a>=b a b {sum += a;
    	a= a-1;} sum += a sum a a= a-1 a a-1 a 1 {sum += b;
    	b= b-1;} sum += b sum b b= b-1 b b-1 b 1 if (a>=b) {sum += a;
	a= a-1;}
else {sum += b;
	b= b-1;} a>=b a b {sum += a;
	a= a-1;} sum += a sum a a= a-1 a a-1 a 1 {sum += b;
	b= b-1;} sum += b sum b b= b-1 b b-1 b 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();
    sc.close();
    int sum =0;
    
    if (a>=b) {sum += a;
    	a= a-1;}
    else {sum += b;
    	b= b-1;}
    if (a>=b) {sum += a;
	a= a-1;}
else {sum += b;
	b= b-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();
    sc.close();
    int sum =0;
    
    if (a>=b) {sum += a;
    	a= a-1;}
    else {sum += b;
    	b= b-1;}
    if (a>=b) {sum += a;
	a= a-1;}
else {sum += b;
	b= b-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();
    sc.close();
    int sum =0;
    
    if (a>=b) {sum += a;
    	a= a-1;}
    else {sum += b;
    	b= b-1;}
    if (a>=b) {sum += a;
	a= a-1;}
else {sum += b;
	b= b-1;}
    
   
   
   
      System.out.println(sum);
	}

}