#include <iostream>
#include <vector>
#include <algorithm>
#include <string>
#include <cmath>
using namespace std;

int main()
{
	double w0 = rand();
	double w1 = rand();
	double w2 = rand();

	for (int i = 0; i < 1e7; i++) {
		double x1 = (double)rand() / RAND_MAX;
		double x2 = (double)rand() / RAND_MAX;
		double y = -x1 + x2;

		double y_pred = w0 + w1*x1 + w2*x2;

		w0 += 1e-4*(y - y_pred);
		w1 += 1e-4*(y - y_pred)*x1;
		w2 += 1e-4*(y - y_pred)*x2;
	}

	double x1, x2, y;
	cin >> x1 >> x2;

	y = w0 + w1*x1 + w2*x2;
	y = round(y);

	cout << showpos << y << endl;

    return 0;
}