#include<bits/stdc++.h>
using namespace std;
#include<atcoder/all>
using namespace atcoder;
using ll = long long;
int a,b;

void solve(){
	int ans = a+b;
	for(int i = 0;i<a+b;i++){
		vector<int> isa(a+b);
		for(int j = 0;j<a;j++){
			isa[(i+j)%(a+b)] = 1;
		}
		int w = 0,c = 0;
		for(int j = 0;j<(a+b);j++){
			if((j<b&&isa[j])||(j>=b)&&isa[j]==0){
				c++;
			}else{
				w++;
			}
		}
		ans = min(ans,abs(w-c));
	}
	cout<<ans<<endl;
}

signed main(){
	cin.tie(nullptr);
	ios::sync_with_stdio(false);
	cin >> a >> b;
	solve();
}