#include <bits/stdc++.h>
using namespace std;
int main (){
	int c,b,ans = 0,a[5] = {};
	scanf("%d%d",&a[1],&a[2]);
	c = a[1],b=a[2];
	for (int i=-200;i<=200;i++) {
		a[3] = i,a[1] = c,a[2] = b;
		sort(a + 1,a + 4);
		if (a[2] - a[1] == a[3] - a[2]) ans++;
	}
	printf("%d",ans);
	return 0;
}

#include<bits/stdc++.h>
using namespace std;
int main()
{
	int a,b;cin>>a>>b;
	if(a==b)cout<<1;
	else if(abs(a-b)%2==0)cout<<3;
	else cout<<2;
}

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

int main () {
	int c,b,ans = 0,a[5] = {};
	scanf("%d%d",&a[1],&a[2]);
	c = a[1],b = a[2];
	for (int i = -200;i <= 200;i++) {
		a[3] = i,a[1] = c,a[2] = b;
		sort(a + 1,a + 4);
		if (a[2] - a[1] == a[3] - a[2]) ans++;
	}
	printf("%d",ans);
	return 0;
}