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 result = 0;
		for (int i = 0; i < 2; i++) {
			if (a == b || a > b) {
				result += a;
				a--;
			} else if (a < b) {
				result += b;
				b--;
			}
		}
		System.out.println(result);
	}
} 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 result = 0;
		for (int i = 0; i < 2; i++) {
			if (a == b || a > b) {
				result += a;
				a--;
			} else if (a < b) {
				result += b;
				b--;
			}
		}
		System.out.println(result);
	}
} Main public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();

		int result = 0;
		for (int i = 0; i < 2; i++) {
			if (a == b || a > b) {
				result += a;
				a--;
			} else if (a < b) {
				result += b;
				b--;
			}
		}
		System.out.println(result);
	} main {

		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();

		int result = 0;
		for (int i = 0; i < 2; i++) {
			if (a == b || a > b) {
				result += a;
				a--;
			} else if (a < b) {
				result += b;
				b--;
			}
		}
		System.out.println(result);
	} 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 result = 0; result 0 for (int i = 0; i < 2; i++) {
			if (a == b || a > b) {
				result += a;
				a--;
			} else if (a < b) {
				result += b;
				b--;
			}
		} int i = 0; int i = 0; i 0 i < 2 i 2 i++ i++ i {
			if (a == b || a > b) {
				result += a;
				a--;
			} else if (a < b) {
				result += b;
				b--;
			}
		} {
			if (a == b || a > b) {
				result += a;
				a--;
			} else if (a < b) {
				result += b;
				b--;
			}
		} if (a == b || a > b) {
				result += a;
				a--;
			} else if (a < b) {
				result += b;
				b--;
			} a == b || a > b a == b a b a > b a b {
				result += a;
				a--;
			} result += a result a a-- a if (a < b) {
				result += b;
				b--;
			} a < b a b {
				result += b;
				b--;
			} result += b result b b-- b System.out.println(result) System.out.println System.out System System.out result 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 result = 0;
		for (int i = 0; i < 2; i++) {
			if (a == b || a > b) {
				result += a;
				a--;
			} else if (a < b) {
				result += b;
				b--;
			}
		}
		System.out.println(result);
	}
} public class Main {
	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();

		int result = 0;
		for (int i = 0; i < 2; i++) {
			if (a == b || a > b) {
				result += a;
				a--;
			} else if (a < b) {
				result += b;
				b--;
			}
		}
		System.out.println(result);
	}
} 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 result = 0;
		for (int i = 0; i < 2; i++) {
			if (a == b || a > b) {
				result += a;
				a--;
			} else if (a < b) {
				result += b;
				b--;
			}
		}
		System.out.println(result);
	}
}