#include<bits/stdc++.h>
#include<string>
#include<algorithm>
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)){
		cout << 1 << endl;
	}else{
		cout << 2 << endl;
	}

	return 0;
}