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();
    int answer = 0;
    if(a==b){
      answer = 2*a;
    }else{
      answer = Math.max(a,b) + Math.max(a,b) -1;
    }
    System.out.println(answer);
  }
  

  
} 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();
    int answer = 0;
    if(a==b){
      answer = 2*a;
    }else{
      answer = Math.max(a,b) + Math.max(a,b) -1;
    }
    System.out.println(answer);
  }
  

  
} Main public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();
    int b = sc.nextInt();
    int answer = 0;
    if(a==b){
      answer = 2*a;
    }else{
      answer = Math.max(a,b) + Math.max(a,b) -1;
    }
    System.out.println(answer);
  } main {
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();
    int b = sc.nextInt();
    int answer = 0;
    if(a==b){
      answer = 2*a;
    }else{
      answer = Math.max(a,b) + Math.max(a,b) -1;
    }
    System.out.println(answer);
  } 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 answer = 0; answer 0 if(a==b){
      answer = 2*a;
    }else{
      answer = Math.max(a,b) + Math.max(a,b) -1;
    } a==b a b {
      answer = 2*a;
    } answer = 2*a answer 2*a 2 a {
      answer = Math.max(a,b) + Math.max(a,b) -1;
    } answer = Math.max(a,b) + Math.max(a,b) -1 answer Math.max(a,b) + Math.max(a,b) -1 Math.max(a,b) + Math.max(a,b) Math.max(a,b) Math.max Math a b Math.max(a,b) Math.max Math a b 1 System.out.println(answer) System.out.println System.out System System.out answer 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 answer = 0;
    if(a==b){
      answer = 2*a;
    }else{
      answer = Math.max(a,b) + Math.max(a,b) -1;
    }
    System.out.println(answer);
  }
  

  
} public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();
    int b = sc.nextInt();
    int answer = 0;
    if(a==b){
      answer = 2*a;
    }else{
      answer = Math.max(a,b) + Math.max(a,b) -1;
    }
    System.out.println(answer);
  }
  

  
} 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();
    int answer = 0;
    if(a==b){
      answer = 2*a;
    }else{
      answer = Math.max(a,b) + Math.max(a,b) -1;
    }
    System.out.println(answer);
  }
  

  
}
