#pragma GCC optimize("O3")
#pragma GCC target("avx2")
#include<bits/stdc++.h>
//#include<atcoder/all>
using namespace std;
//using namespace atcoder; 
using ll=long long;
//using mint=modint998244353;
const ll inf=(1e9+7)*(1e9+7);
int dx[4]={1,0,0,-1},dy[4]={0,1,-1,0};
const int mod=998244353;
using P=pair<ll,ll>;
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==y||x==-y)
		cout<<1<<endl;
	else
		cout<<2<<endl;
}