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

signed main() {
	string sa, sb;
	int a = 1, b = 1;
	cin >> sa >> sb;
	while (sa.front() == '-') {
		sa.erase(sa.begin());
		a *= -1;
	}
	while (sb.front() == '-') {
		sb.erase(sb.begin());
		b *= -1;
	}
	a *= stoi(sa);
	b *= stoi(sb);
	cout << a + b << endl;
}