#include #include #include #include #include #include #include #include #include using namespace std; typedef long long ll; #define int long long #define double long double typedef vector VI; typedef pair pii; typedef vector VP; typedef vector VS; typedef priority_queue PQ; templatebool chmax(T &a, const T &b) { if (a < b) { a = b; return 1; } return 0; } templatebool chmin(T &a, const T &b) { if (b < a) { a = b; return 1; } return 0; } #define fore(i,a) for(auto &i:a) #define REP(i,n) for(int i=0;i, greater > q2; signed main() { cin.tie(0); ios::sync_with_stdio(false); int N, K; cin >> N >> K; if (K < N)cout << K + 1 << endl; else if (N & 1)cout << min(N, 1 + K) << endl; else cout << min(N / 2, 1 + K) << endl; return 0; }