import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc=new Scanner(System.in);
		int A=sc.nextInt(),B=sc.nextInt();
		int ans=0;

		for(int i=0;i<2;i++) {
			if(A>B) {
				ans+=A;
				A-=1;
			}else {
				ans+=B;
				B-=1;
			}
		}
		System.out.println(ans);
	}
} 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(),B=sc.nextInt();
		int ans=0;

		for(int i=0;i<2;i++) {
			if(A>B) {
				ans+=A;
				A-=1;
			}else {
				ans+=B;
				B-=1;
			}
		}
		System.out.println(ans);
	}
} Main public static void main(String[] args) {
		Scanner sc=new Scanner(System.in);
		int A=sc.nextInt(),B=sc.nextInt();
		int ans=0;

		for(int i=0;i<2;i++) {
			if(A>B) {
				ans+=A;
				A-=1;
			}else {
				ans+=B;
				B-=1;
			}
		}
		System.out.println(ans);
	} main {
		Scanner sc=new Scanner(System.in);
		int A=sc.nextInt(),B=sc.nextInt();
		int ans=0;

		for(int i=0;i<2;i++) {
			if(A>B) {
				ans+=A;
				A-=1;
			}else {
				ans+=B;
				B-=1;
			}
		}
		System.out.println(ans);
	} Scanner sc=new Scanner(System.in); sc new Scanner(System.in) int A=sc.nextInt() A sc.nextInt() sc.nextInt sc B=sc.nextInt(); B sc.nextInt() sc.nextInt sc int ans=0; ans 0 for(int i=0;i<2;i++) {
			if(A>B) {
				ans+=A;
				A-=1;
			}else {
				ans+=B;
				B-=1;
			}
		} int i=0; int i=0; i 0 i<2 i 2 i++ i++ i {
			if(A>B) {
				ans+=A;
				A-=1;
			}else {
				ans+=B;
				B-=1;
			}
		} {
			if(A>B) {
				ans+=A;
				A-=1;
			}else {
				ans+=B;
				B-=1;
			}
		} if(A>B) {
				ans+=A;
				A-=1;
			}else {
				ans+=B;
				B-=1;
			} A>B A B {
				ans+=A;
				A-=1;
			} ans+=A ans A A-=1 A 1 {
				ans+=B;
				B-=1;
			} ans+=B ans B B-=1 B 1 System.out.println(ans) System.out.println System.out System System.out ans String[] args args public class Main {
	public static void main(String[] args) {
		Scanner sc=new Scanner(System.in);
		int A=sc.nextInt(),B=sc.nextInt();
		int ans=0;

		for(int i=0;i<2;i++) {
			if(A>B) {
				ans+=A;
				A-=1;
			}else {
				ans+=B;
				B-=1;
			}
		}
		System.out.println(ans);
	}
} public class Main {
	public static void main(String[] args) {
		Scanner sc=new Scanner(System.in);
		int A=sc.nextInt(),B=sc.nextInt();
		int ans=0;

		for(int i=0;i<2;i++) {
			if(A>B) {
				ans+=A;
				A-=1;
			}else {
				ans+=B;
				B-=1;
			}
		}
		System.out.println(ans);
	}
} Main
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc=new Scanner(System.in);
		int A=sc.nextInt(),B=sc.nextInt();
		int ans=0;

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