///@author Sycamore///@date 8/8/2017#includeusing namespace std;int main(){ ios::sync_with_stdio(false); cin.tie(0); int n, k; while (cin >> n >> k) { char ch; int t; multiset s; while (n--) { cin >> ch; if (ch == 'I') { cin >> t; s.insert(t); if (s.size() > k)s.erase(s.begin()); } else cout <<*s.begin()<