#include <bits/stdc++.h>
using namespace std;

int main() {
	int a, b;
	cin >> a >> b;
	long long l = 1, r = pow(2, 31) - 2;
	while (l < r) {
		long long mid = (l + r) / 2;
		if (a + b <= mid)
			r = mid;
		else
			l = mid + 1;
	}
	cout << r;
}