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 sum;

		if( A <= B -1) {
			sum = 2 * B - 1;
		}else if( A < B + 1 && A > B - 1) {
			sum = A + B;
		}else {
			sum = 2 * A - 1;
		}

		System.out.println(sum);
	}

} 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 sum;

		if( A <= B -1) {
			sum = 2 * B - 1;
		}else if( A < B + 1 && A > B - 1) {
			sum = A + B;
		}else {
			sum = 2 * A - 1;
		}

		System.out.println(sum);
	}

} Main public static void main(String[] args) {
		
		Scanner sc = new Scanner(System.in);
		int A = sc.nextInt();
		int B = sc.nextInt();
		int sum;

		if( A <= B -1) {
			sum = 2 * B - 1;
		}else if( A < B + 1 && A > B - 1) {
			sum = A + B;
		}else {
			sum = 2 * A - 1;
		}

		System.out.println(sum);
	} main {
		
		Scanner sc = new Scanner(System.in);
		int A = sc.nextInt();
		int B = sc.nextInt();
		int sum;

		if( A <= B -1) {
			sum = 2 * B - 1;
		}else if( A < B + 1 && A > B - 1) {
			sum = A + B;
		}else {
			sum = 2 * A - 1;
		}

		System.out.println(sum);
	} 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 sum; sum if( A <= B -1) {
			sum = 2 * B - 1;
		}else if( A < B + 1 && A > B - 1) {
			sum = A + B;
		}else {
			sum = 2 * A - 1;
		} A <= B -1 A B -1 B 1 {
			sum = 2 * B - 1;
		} sum = 2 * B - 1 sum 2 * B - 1 2 * B 2 B 1 if( A < B + 1 && A > B - 1) {
			sum = A + B;
		}else {
			sum = 2 * A - 1;
		} A < B + 1 && A > B - 1 A < B + 1 A B + 1 B 1 A > B - 1 A B - 1 B 1 {
			sum = A + B;
		} sum = A + B sum A + B A B {
			sum = 2 * A - 1;
		} sum = 2 * A - 1 sum 2 * A - 1 2 * A 2 A 1 System.out.println(sum) System.out.println System.out System System.out sum 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 sum;

		if( A <= B -1) {
			sum = 2 * B - 1;
		}else if( A < B + 1 && A > B - 1) {
			sum = A + B;
		}else {
			sum = 2 * A - 1;
		}

		System.out.println(sum);
	}

} public class Main {

	public static void main(String[] args) {
		
		Scanner sc = new Scanner(System.in);
		int A = sc.nextInt();
		int B = sc.nextInt();
		int sum;

		if( A <= B -1) {
			sum = 2 * B - 1;
		}else if( A < B + 1 && A > B - 1) {
			sum = A + B;
		}else {
			sum = 2 * A - 1;
		}

		System.out.println(sum);
	}

} 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 sum;

		if( A <= B -1) {
			sum = 2 * B - 1;
		}else if( A < B + 1 && A > B - 1) {
			sum = A + B;
		}else {
			sum = 2 * A - 1;
		}

		System.out.println(sum);
	}

}