import java.util.*;

public class Main{
  public static void main(String[] args){
    Scanner sc=new Scanner(System.in);
    int A=sc.nextInt(), B=sc.nextInt();
    if(A-B>=2){
      System.out.println(A+A-1);
    }else if(B-A>=2){
      System.out.println(B+B-1);
    } else{
      System.out.println(A+B);
    }
  }
} import java.util.*; util.* java public class Main{
  public static void main(String[] args){
    Scanner sc=new Scanner(System.in);
    int A=sc.nextInt(), B=sc.nextInt();
    if(A-B>=2){
      System.out.println(A+A-1);
    }else if(B-A>=2){
      System.out.println(B+B-1);
    } else{
      System.out.println(A+B);
    }
  }
} Main public static void main(String[] args){
    Scanner sc=new Scanner(System.in);
    int A=sc.nextInt(), B=sc.nextInt();
    if(A-B>=2){
      System.out.println(A+A-1);
    }else if(B-A>=2){
      System.out.println(B+B-1);
    } else{
      System.out.println(A+B);
    }
  } main {
    Scanner sc=new Scanner(System.in);
    int A=sc.nextInt(), B=sc.nextInt();
    if(A-B>=2){
      System.out.println(A+A-1);
    }else if(B-A>=2){
      System.out.println(B+B-1);
    } else{
      System.out.println(A+B);
    }
  } Scanner sc=new Scanner(System.in); sc new Scanner(System.in) int A=sc.nextInt() A sc.nextInt() sc.nextInt sc B=sc.nextInt(); B sc.nextInt() sc.nextInt sc if(A-B>=2){
      System.out.println(A+A-1);
    }else if(B-A>=2){
      System.out.println(B+B-1);
    } else{
      System.out.println(A+B);
    } A-B>=2 A-B A B 2 {
      System.out.println(A+A-1);
    } System.out.println(A+A-1) System.out.println System.out System System.out A+A-1 A+A A A 1 if(B-A>=2){
      System.out.println(B+B-1);
    } else{
      System.out.println(A+B);
    } B-A>=2 B-A B A 2 {
      System.out.println(B+B-1);
    } System.out.println(B+B-1) System.out.println System.out System System.out B+B-1 B+B B B 1 {
      System.out.println(A+B);
    } System.out.println(A+B) System.out.println System.out System System.out A+B A B String[] args args public class Main{
  public static void main(String[] args){
    Scanner sc=new Scanner(System.in);
    int A=sc.nextInt(), B=sc.nextInt();
    if(A-B>=2){
      System.out.println(A+A-1);
    }else if(B-A>=2){
      System.out.println(B+B-1);
    } else{
      System.out.println(A+B);
    }
  }
} public class Main{
  public static void main(String[] args){
    Scanner sc=new Scanner(System.in);
    int A=sc.nextInt(), B=sc.nextInt();
    if(A-B>=2){
      System.out.println(A+A-1);
    }else if(B-A>=2){
      System.out.println(B+B-1);
    } else{
      System.out.println(A+B);
    }
  }
} Main
import java.util.*;

public class Main{
  public static void main(String[] args){
    Scanner sc=new Scanner(System.in);
    int A=sc.nextInt(), B=sc.nextInt();
    if(A-B>=2){
      System.out.println(A+A-1);
    }else if(B-A>=2){
      System.out.println(B+B-1);
    } else{
      System.out.println(A+B);
    }
  }
}
