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 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();
   
   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();
   
   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();
   
   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 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();
   
   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();
   
   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();
   
   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);
 }
}