#include <bits/stdc++.h>
using namespace std;
 
int main() {
  int x,y;
  cin>>x>>y;
  int m=2;
  if(x==0)
  m=m-1;
  if(y==0)
  m=m-1;
  else if(x==y or x==-y)
  m=1;
  cout<<m<<endl;
}