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

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