import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
	    int N = sc.nextInt();
	    int M = sc.nextInt();
	    
	    if (N==M)
	    	System.out.println(N+M);
	    
	    else if (N-1>=M)
	    	System.out.println(2*N-1);
	    
	    
	    else 
	    	System.out.println(2*M-1);
	    
	    sc.close();

	}

} import java.util.Scanner; Scanner java.util public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
	    int N = sc.nextInt();
	    int M = sc.nextInt();
	    
	    if (N==M)
	    	System.out.println(N+M);
	    
	    else if (N-1>=M)
	    	System.out.println(2*N-1);
	    
	    
	    else 
	    	System.out.println(2*M-1);
	    
	    sc.close();

	}

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

	} main {
		Scanner sc = new Scanner(System.in);
	    int N = sc.nextInt();
	    int M = sc.nextInt();
	    
	    if (N==M)
	    	System.out.println(N+M);
	    
	    else if (N-1>=M)
	    	System.out.println(2*N-1);
	    
	    
	    else 
	    	System.out.println(2*M-1);
	    
	    sc.close();

	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int N = sc.nextInt(); N sc.nextInt() sc.nextInt sc int M = sc.nextInt(); M sc.nextInt() sc.nextInt sc if (N==M)
	    	System.out.println(N+M);
	    
	    else if (N-1>=M)
	    	System.out.println(2*N-1);
	    
	    
	    else 
	    	System.out.println(2*M-1); N==M N M System.out.println(N+M) System.out.println System.out System System.out N+M N M if (N-1>=M)
	    	System.out.println(2*N-1);
	    
	    
	    else 
	    	System.out.println(2*M-1); N-1>=M N-1 N 1 M System.out.println(2*N-1) System.out.println System.out System System.out 2*N-1 2*N 2 N 1 System.out.println(2*M-1) System.out.println System.out System System.out 2*M-1 2*M 2 M 1 sc.close() sc.close sc String[] args args public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
	    int N = sc.nextInt();
	    int M = sc.nextInt();
	    
	    if (N==M)
	    	System.out.println(N+M);
	    
	    else if (N-1>=M)
	    	System.out.println(2*N-1);
	    
	    
	    else 
	    	System.out.println(2*M-1);
	    
	    sc.close();

	}

} public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
	    int N = sc.nextInt();
	    int M = sc.nextInt();
	    
	    if (N==M)
	    	System.out.println(N+M);
	    
	    else if (N-1>=M)
	    	System.out.println(2*N-1);
	    
	    
	    else 
	    	System.out.println(2*M-1);
	    
	    sc.close();

	}

} Main
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
	    int N = sc.nextInt();
	    int M = sc.nextInt();
	    
	    if (N==M)
	    	System.out.println(N+M);
	    
	    else if (N-1>=M)
	    	System.out.println(2*N-1);
	    
	    
	    else 
	    	System.out.println(2*M-1);
	    
	    sc.close();

	}

}