#include <iostream>
#include <cstdlib>
using namespace std;

void f00();   void f01();   void f02();
void f10();   void f11();   void f12();

int main()
{
	int x;   //uninitialzied variable
	cin >> x;

	int y;   //uninitialzied variable
	cin >> y;

	if (y == 0) {
		if (x == 0) {
			f00();
		} else if (x == 1) {
			f01();
		} else if (x == 2) {
			f02();
		} else {
			cerr << "x value " << x
				<< " must be in the range 0 to 2 inclusive\n";
			return EXIT_FAILURE;
		}
	} else if (y == 1) {
		if (x == 0) {
			f10();
		} else if (x == 1) {
			f11();
		} else if (x == 2) {
			f12();
		} else {
			cerr << "x value " << x
				<< " must be in the range 0 to 2 inclusive\n";
			return EXIT_FAILURE;
		}
	} else {
		cerr << "y value " << y
			<< " must be in the range 0 to 1 inclusive\n";
		return EXIT_FAILURE;
	}

	return EXIT_SUCCESS;
}