#include <iostream> #include <cmath> #include <string> #include <vector> #include <algorithm> #include <utility> #include <tuple> #include <cstdint> #include <cstdio> #include <map> #include <queue> #include <set> #include <stack> #include <deque> #include <unordered_map> #include <unordered_set> #include <bitset> #include <cctype> #include <climits> #include <functional> #include <cassert> #include <numeric> #define rep(i, n) for(int i = 0; i < (n); i++) #define per(i, n) for(int i = (n) - 1; i >= 0; i--) using ll = long long; #define vi vector<int> #define vvi vector<vi> #define vl vector<ll> #define pii pair<int, int> #define pll pair<ll, ll> #define all(a) (a).begin(), (a).end() #define rall(a) (a).rbegin(), (a).rend() constexpr int mod = 1000000007; using namespace std; template<class T, class U> bool chmax(T &a, const U &b){ return a < b ? (a = b, 1) : 0; } template<class T, class U> bool chmin(T &a, const U &b){ return a > b ? (a = b, 1) : 0; } int main(){ int a,b; cin >> a >> b; int ans = mod; rep(i, a+1){ if(b >= a-i) chmin(ans, abs(i+b-(a-i) - (a-i)-(a-i))); } cout << ans << "\n"; }