#include<iostream>
#include<string>
#include<vector>
#include<algorithm>
#include<map>
using namespace std;
int main() {
	int a,b,ans;
	cin >> a >> b;
	if(a==b) ans = min(a, b)*2-1;
	else  ans = min(a, b) * 2 ;

     cout <<ans<< endl;
	return 0;
}