#define rep(i,n) for(int i=0;i<(int)(n);i++)
#define ALL(v) v.begin(),v.end()
typedef long long ll;

#include<bits/stdc++.h>
using namespace std;
template<class T>using V=vector<T>;
template<class T>using VV=V<V<T>>;//B(n,V<int>(n))

int main(){
  ios::sync_with_stdio(false);
  std::cin.tie(nullptr);

  int x,y;
  cin>>x>>y;
  if(x==0 && y==0) cout<<0<<endl;
  else if(abs(x)==abs(y)) cout<<1<<endl;
  else if(x==0 || y==0) cout<<1<<endl;
  else cout<<2<<endl;
 
  return 0;
}