import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);

		int a = Integer.parseInt(sc.next());
		int b = Integer.parseInt(sc.next());


		int count = 0;

		for (int i = 0; i < 2 ; i++) {
			if(a > b) {
				count += a;
				a--;
			} else {
				count += b;
				b--;
			}
		}

		System.out.println(count);
	}
} import java.util.Scanner; Scanner java.util public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);

		int a = Integer.parseInt(sc.next());
		int b = Integer.parseInt(sc.next());


		int count = 0;

		for (int i = 0; i < 2 ; i++) {
			if(a > b) {
				count += a;
				a--;
			} else {
				count += b;
				b--;
			}
		}

		System.out.println(count);
	}
} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);

		int a = Integer.parseInt(sc.next());
		int b = Integer.parseInt(sc.next());


		int count = 0;

		for (int i = 0; i < 2 ; i++) {
			if(a > b) {
				count += a;
				a--;
			} else {
				count += b;
				b--;
			}
		}

		System.out.println(count);
	} main {
		Scanner sc = new Scanner(System.in);

		int a = Integer.parseInt(sc.next());
		int b = Integer.parseInt(sc.next());


		int count = 0;

		for (int i = 0; i < 2 ; i++) {
			if(a > b) {
				count += a;
				a--;
			} else {
				count += b;
				b--;
			}
		}

		System.out.println(count);
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int a = Integer.parseInt(sc.next()); a Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc int b = Integer.parseInt(sc.next()); b Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc int count = 0; count 0 for (int i = 0; i < 2 ; i++) {
			if(a > b) {
				count += a;
				a--;
			} else {
				count += b;
				b--;
			}
		} int i = 0; int i = 0; i 0 i < 2 i 2 i++ i++ i {
			if(a > b) {
				count += a;
				a--;
			} else {
				count += b;
				b--;
			}
		} {
			if(a > b) {
				count += a;
				a--;
			} else {
				count += b;
				b--;
			}
		} if(a > b) {
				count += a;
				a--;
			} else {
				count += b;
				b--;
			} a > b a b {
				count += a;
				a--;
			} count += a count a a-- a {
				count += b;
				b--;
			} count += b count b b-- b System.out.println(count) System.out.println System.out System System.out count String[] args args public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);

		int a = Integer.parseInt(sc.next());
		int b = Integer.parseInt(sc.next());


		int count = 0;

		for (int i = 0; i < 2 ; i++) {
			if(a > b) {
				count += a;
				a--;
			} else {
				count += b;
				b--;
			}
		}

		System.out.println(count);
	}
} public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);

		int a = Integer.parseInt(sc.next());
		int b = Integer.parseInt(sc.next());


		int count = 0;

		for (int i = 0; i < 2 ; i++) {
			if(a > b) {
				count += a;
				a--;
			} else {
				count += b;
				b--;
			}
		}

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

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);

		int a = Integer.parseInt(sc.next());
		int b = Integer.parseInt(sc.next());


		int count = 0;

		for (int i = 0; i < 2 ; i++) {
			if(a > b) {
				count += a;
				a--;
			} else {
				count += b;
				b--;
			}
		}

		System.out.println(count);
	}
}