import java.util.*;
import static java.lang.Math.*;
import java.math.BigInteger;

public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		
		// 入力
		int a = sc.nextInt();
		int b = sc.nextInt();
		
		// 計算
		int result = 0;
		if(a > b){
		    result = a + a - 1;
		}else if(a < b){
		    result = b + b - 1;
		}else{
		    result = a + b;
		}
		
		// 出力
        System.out.println(result);
	}
} import java.util.*; util.* java import static java.lang.Math.*; import static java.lang.Math.*; import static java.lang.Math.*; import java.math.BigInteger; BigInteger java.math public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		
		// 入力
		int a = sc.nextInt();
		int b = sc.nextInt();
		
		// 計算
		int result = 0;
		if(a > b){
		    result = a + a - 1;
		}else if(a < b){
		    result = b + b - 1;
		}else{
		    result = a + b;
		}
		
		// 出力
        System.out.println(result);
	}
} Main public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		
		// 入力
		int a = sc.nextInt();
		int b = sc.nextInt();
		
		// 計算
		int result = 0;
		if(a > b){
		    result = a + a - 1;
		}else if(a < b){
		    result = b + b - 1;
		}else{
		    result = a + b;
		}
		
		// 出力
        System.out.println(result);
	} main {
		Scanner sc = new Scanner(System.in);
		
		// 入力
		int a = sc.nextInt();
		int b = sc.nextInt();
		
		// 計算
		int result = 0;
		if(a > b){
		    result = a + a - 1;
		}else if(a < b){
		    result = b + b - 1;
		}else{
		    result = a + b;
		}
		
		// 出力
        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 if(a > b){
		    result = a + a - 1;
		}else if(a < b){
		    result = b + b - 1;
		}else{
		    result = a + b;
		} a > b a b {
		    result = a + a - 1;
		} result = a + a - 1 result a + a - 1 a + a a a 1 if(a < b){
		    result = b + b - 1;
		}else{
		    result = a + b;
		} a < b a b {
		    result = b + b - 1;
		} result = b + b - 1 result b + b - 1 b + b b b 1 {
		    result = a + b;
		} result = a + b result a + b a 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);
		
		// 入力
		int a = sc.nextInt();
		int b = sc.nextInt();
		
		// 計算
		int result = 0;
		if(a > b){
		    result = a + a - 1;
		}else if(a < b){
		    result = b + b - 1;
		}else{
		    result = a + b;
		}
		
		// 出力
        System.out.println(result);
	}
} public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		
		// 入力
		int a = sc.nextInt();
		int b = sc.nextInt();
		
		// 計算
		int result = 0;
		if(a > b){
		    result = a + a - 1;
		}else if(a < b){
		    result = b + b - 1;
		}else{
		    result = a + b;
		}
		
		// 出力
        System.out.println(result);
	}
} Main
import java.util.*;
import static java.lang.Math.*;
import java.math.BigInteger;

public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		
		// 入力
		int a = sc.nextInt();
		int b = sc.nextInt();
		
		// 計算
		int result = 0;
		if(a > b){
		    result = a + a - 1;
		}else if(a < b){
		    result = b + b - 1;
		}else{
		    result = a + b;
		}
		
		// 出力
        System.out.println(result);
	}
}