#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(x==0 || y==0){
  	cout << 1 << endl;
  	}
  else{
	if(x>0 && y>0){
  		if(x==y){
  			cout<< 1 <<endl;
  		}
  		else{
  			cout<<2<<endl;
  		}
  	}
  	if(x>0 && y<0){
  		if(x==0-y){
  			cout<< 1 <<endl;
  		}
  		else{
  			cout<<2<<endl;
  		}
  	}
  	if(x<0 && y>0){
  		if(0-x==y){
  			cout<< 1 <<endl;
  		}
  		else{
  			cout<<2<<endl;
  		}
  	}
  	if(x<0 && y<0){
  		if(x==y){
  			cout<< 1 <<endl;
  		}
  		else{
  			cout<<2<<endl;
  		}
  	}
  }
}
}