include[HTML_REMOVED]
using namespace std;
long long x,y,n,ans=0;
int main(){
cin>>x>>y;
n=max(abs(x),abs(y));
ans=4nn;
if(abs(x)==n){
if(x>0){
ans+=x-y;
}else ans-=(abs(x)-y+2abs(x));
}else{
if(y>0)ans-=(y-x);
else ans+=3abs(y)-x;
}
cout<<ans;
}