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;
		
		for (int i = 0; i < 2; i++) {
			if(A < B) {
				sum += B;
				B -= 1;
			} else {
				sum += A;
				A -= 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;
		
		for (int i = 0; i < 2; i++) {
			if(A < B) {
				sum += B;
				B -= 1;
			} else {
				sum += A;
				A -= 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;
		
		for (int i = 0; i < 2; i++) {
			if(A < B) {
				sum += B;
				B -= 1;
			} else {
				sum += A;
				A -= 1;
			}
		}
		System.out.println(sum);
	} main {

		Scanner scanner = new Scanner(System.in);
		int A = scanner.nextInt();
		int B = scanner.nextInt();
		int sum = 0;
		
		for (int i = 0; i < 2; i++) {
			if(A < B) {
				sum += B;
				B -= 1;
			} else {
				sum += A;
				A -= 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 for (int i = 0; i < 2; i++) {
			if(A < B) {
				sum += B;
				B -= 1;
			} else {
				sum += A;
				A -= 1;
			}
		} int i = 0; int i = 0; i 0 i < 2 i 2 i++ i++ i {
			if(A < B) {
				sum += B;
				B -= 1;
			} else {
				sum += A;
				A -= 1;
			}
		} {
			if(A < B) {
				sum += B;
				B -= 1;
			} else {
				sum += A;
				A -= 1;
			}
		} if(A < B) {
				sum += B;
				B -= 1;
			} else {
				sum += A;
				A -= 1;
			} A < B A B {
				sum += B;
				B -= 1;
			} sum += B sum B B -= 1 B 1 {
				sum += A;
				A -= 1;
			} sum += A sum A A -= 1 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 scanner = new Scanner(System.in);
		int A = scanner.nextInt();
		int B = scanner.nextInt();
		int sum = 0;
		
		for (int i = 0; i < 2; i++) {
			if(A < B) {
				sum += B;
				B -= 1;
			} else {
				sum += A;
				A -= 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;
		
		for (int i = 0; i < 2; i++) {
			if(A < B) {
				sum += B;
				B -= 1;
			} else {
				sum += A;
				A -= 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;
		
		for (int i = 0; i < 2; i++) {
			if(A < B) {
				sum += B;
				B -= 1;
			} else {
				sum += A;
				A -= 1;
			}
		}
		System.out.println(sum);
	}
}
