#include <bits/stdc++.h>
using namespace std;
 
int main() {
  long long a,b;
 cin >> a >> b;
 if(a == 0 && b == 0){
 	cout << 0 << endl;
 	return 0;
 }else if(abs(a) == abs(b) || a == 0 || b == 0){
 	cout << 1 << endl;
 	return 0;
 }else {
 	cout << 2 << endl;
 }
}