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