#include <iostream>

using namespace std;

void coutResult(int t);
void init(int& a, int& b, int& c);
int result(int a, int b, int c);

int main() {
	int a, b, c;
	init(a, b, c);
	int t = result(a, b, c);
	coutResult(t);
}

void init(int& a, int& b, int& c) {
	cin >> a >> b;
	c = 180 - (a + b);
}
int result(int a, int b, int c) {
	if (a == 90 || b == 90 || c == 90) {
		if (a == 45 || b == 45 || c == 45) return 0;
		else return 1;
	}
	if (a > 90 || b > 90 || c > 90) return 2;
	return 3;
}

void coutResult(int t) {
	cout << t;
}