import java.util.*;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) throws Exception {
        
		Scanner sc=new Scanner(System.in);

		int A=sc.nextInt();
		int B=sc.nextInt();
		int ans;
		
		if (A==B){
		    ans=A+B;
		}else{
		    if (A<B){A=B;}
		    ans=A*2-1;
		}

        System.out.println(ans);
    }
} import java.util.*; util.* java import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args) throws Exception {
        
		Scanner sc=new Scanner(System.in);

		int A=sc.nextInt();
		int B=sc.nextInt();
		int ans;
		
		if (A==B){
		    ans=A+B;
		}else{
		    if (A<B){A=B;}
		    ans=A*2-1;
		}

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

		int A=sc.nextInt();
		int B=sc.nextInt();
		int ans;
		
		if (A==B){
		    ans=A+B;
		}else{
		    if (A<B){A=B;}
		    ans=A*2-1;
		}

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

		int A=sc.nextInt();
		int B=sc.nextInt();
		int ans;
		
		if (A==B){
		    ans=A+B;
		}else{
		    if (A<B){A=B;}
		    ans=A*2-1;
		}

        System.out.println(ans);
    } 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 ans; ans if (A==B){
		    ans=A+B;
		}else{
		    if (A<B){A=B;}
		    ans=A*2-1;
		} A==B A B {
		    ans=A+B;
		} ans=A+B ans A+B A B {
		    if (A<B){A=B;}
		    ans=A*2-1;
		} if (A<B){A=B;} A<B A B {A=B;} A=B A B ans=A*2-1 ans A*2-1 A*2 A 2 1 System.out.println(ans) System.out.println System.out System System.out ans String[] args args public class Main {
    public static void main(String[] args) throws Exception {
        
		Scanner sc=new Scanner(System.in);

		int A=sc.nextInt();
		int B=sc.nextInt();
		int ans;
		
		if (A==B){
		    ans=A+B;
		}else{
		    if (A<B){A=B;}
		    ans=A*2-1;
		}

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

		int A=sc.nextInt();
		int B=sc.nextInt();
		int ans;
		
		if (A==B){
		    ans=A+B;
		}else{
		    if (A<B){A=B;}
		    ans=A*2-1;
		}

        System.out.println(ans);
    }
} Main
import java.util.*;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) throws Exception {
        
		Scanner sc=new Scanner(System.in);

		int A=sc.nextInt();
		int B=sc.nextInt();
		int ans;
		
		if (A==B){
		    ans=A+B;
		}else{
		    if (A<B){A=B;}
		    ans=A*2-1;
		}

        System.out.println(ans);
    }
}
