#include <iostream>

using namespace std;

int main()
{
    unsigned short x, y;
    cin >> x >> y;
    x = (x | x << 2) & 0x33;
    x = (x | x << 1) & 0x55;
	y = (y | y << 2) & 0x33;
	y = (y | y << 1) & 0x55;
    unsigned short z = x | y << 1;
	cout << z << endl;
    return 0;
}