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

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