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 result=0;
        for(int i=0;i<2;i++) {
			result += Math.max(A,B);
            if(result == A) A--;
            else B--;
		}
    	System.out.println(result);
	}
} 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 result=0;
        for(int i=0;i<2;i++) {
			result += Math.max(A,B);
            if(result == A) A--;
            else B--;
		}
    	System.out.println(result);
	}
} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int A = sc.nextInt();
		int B = sc.nextInt();
        int result=0;
        for(int i=0;i<2;i++) {
			result += Math.max(A,B);
            if(result == A) A--;
            else B--;
		}
    	System.out.println(result);
	} main {
		Scanner sc = new Scanner(System.in);
		int A = sc.nextInt();
		int B = sc.nextInt();
        int result=0;
        for(int i=0;i<2;i++) {
			result += Math.max(A,B);
            if(result == A) A--;
            else B--;
		}
    	System.out.println(result);
	} 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 result=0; result 0 for(int i=0;i<2;i++) {
			result += Math.max(A,B);
            if(result == A) A--;
            else B--;
		} int i=0; int i=0; i 0 i<2 i 2 i++ i++ i {
			result += Math.max(A,B);
            if(result == A) A--;
            else B--;
		} {
			result += Math.max(A,B);
            if(result == A) A--;
            else B--;
		} result += Math.max(A,B) result Math.max(A,B) Math.max Math A B if(result == A) A--;
            else B--; result == A result A A-- A B-- B System.out.println(result) System.out.println System.out System System.out result 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 result=0;
        for(int i=0;i<2;i++) {
			result += Math.max(A,B);
            if(result == A) A--;
            else B--;
		}
    	System.out.println(result);
	}
} public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int A = sc.nextInt();
		int B = sc.nextInt();
        int result=0;
        for(int i=0;i<2;i++) {
			result += Math.max(A,B);
            if(result == A) A--;
            else B--;
		}
    	System.out.println(result);
	}
} 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 result=0;
        for(int i=0;i<2;i++) {
			result += Math.max(A,B);
            if(result == A) A--;
            else B--;
		}
    	System.out.println(result);
	}
}