#include <stdio.h>

int main(void){
	int a = 0 , b = 0;
	scanf("%d %d",&a,&b);
	int day = 0;
	if(a < b){
		day = a*2;
	}else if(a > b){
		day = b*2;
	}else{
		day = a*2-1;
	}
	printf("%d",day);
}