import java.util.Scanner;

public class Main {

	public static void main(String[] args) {

		Scanner scanner = new Scanner(System.in);
		int A = scanner.nextInt();
		int B = scanner.nextInt();;
		int sum = 0;
		if (A > B) {
			
			sum = A + (A - 1);
			
		}else if (A == B){
			
			sum = A + B;
			
		}else if(A < B){
			
			sum = B + (B - 1);
		}

		System.out.println(sum);
		
	}
} import java.util.Scanner; Scanner java.util public class Main {

	public static void main(String[] args) {

		Scanner scanner = new Scanner(System.in);
		int A = scanner.nextInt();
		int B = scanner.nextInt();;
		int sum = 0;
		if (A > B) {
			
			sum = A + (A - 1);
			
		}else if (A == B){
			
			sum = A + B;
			
		}else if(A < B){
			
			sum = B + (B - 1);
		}

		System.out.println(sum);
		
	}
} Main public static void main(String[] args) {

		Scanner scanner = new Scanner(System.in);
		int A = scanner.nextInt();
		int B = scanner.nextInt();;
		int sum = 0;
		if (A > B) {
			
			sum = A + (A - 1);
			
		}else if (A == B){
			
			sum = A + B;
			
		}else if(A < B){
			
			sum = B + (B - 1);
		}

		System.out.println(sum);
		
	} main {

		Scanner scanner = new Scanner(System.in);
		int A = scanner.nextInt();
		int B = scanner.nextInt();;
		int sum = 0;
		if (A > B) {
			
			sum = A + (A - 1);
			
		}else if (A == B){
			
			sum = A + B;
			
		}else if(A < B){
			
			sum = B + (B - 1);
		}

		System.out.println(sum);
		
	} Scanner scanner = new Scanner(System.in); scanner new Scanner(System.in) int A = scanner.nextInt(); A scanner.nextInt() scanner.nextInt scanner int B = scanner.nextInt(); B scanner.nextInt() scanner.nextInt scanner int sum = 0; sum 0 if (A > B) {
			
			sum = A + (A - 1);
			
		}else if (A == B){
			
			sum = A + B;
			
		}else if(A < B){
			
			sum = B + (B - 1);
		} A > B A B {
			
			sum = A + (A - 1);
			
		} sum = A + (A - 1) sum A + (A - 1) A (A - 1) A 1 if (A == B){
			
			sum = A + B;
			
		}else if(A < B){
			
			sum = B + (B - 1);
		} A == B A B {
			
			sum = A + B;
			
		} sum = A + B sum A + B A B if(A < B){
			
			sum = B + (B - 1);
		} A < B A B {
			
			sum = B + (B - 1);
		} sum = B + (B - 1) sum B + (B - 1) B (B - 1) B 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 scanner = new Scanner(System.in);
		int A = scanner.nextInt();
		int B = scanner.nextInt();;
		int sum = 0;
		if (A > B) {
			
			sum = A + (A - 1);
			
		}else if (A == B){
			
			sum = A + B;
			
		}else if(A < B){
			
			sum = B + (B - 1);
		}

		System.out.println(sum);
		
	}
} public class Main {

	public static void main(String[] args) {

		Scanner scanner = new Scanner(System.in);
		int A = scanner.nextInt();
		int B = scanner.nextInt();;
		int sum = 0;
		if (A > B) {
			
			sum = A + (A - 1);
			
		}else if (A == B){
			
			sum = A + B;
			
		}else if(A < B){
			
			sum = B + (B - 1);
		}

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

public class Main {

	public static void main(String[] args) {

		Scanner scanner = new Scanner(System.in);
		int A = scanner.nextInt();
		int B = scanner.nextInt();;
		int sum = 0;
		if (A > B) {
			
			sum = A + (A - 1);
			
		}else if (A == B){
			
			sum = A + B;
			
		}else if(A < B){
			
			sum = B + (B - 1);
		}

		System.out.println(sum);
		
	}
}
