#include <iostream>

using namespace std;

int main() {

	int A, B;
	cin >> A >> B;
	
	if (A > B) {
		cout << B * 2 << endl;
	}
	else if (A < B) {
		cout << A * 2 << endl;
	}
	else {
		cout << A * 2 - 1 << endl;
	}

}