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FZOI/The kth great number(对顶堆).cpp

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+#include <bits/stdc++.h>
+#define int long long
+using namespace std;
+
+signed main()
+{
+    int n, k;
+    cin >> n >> k;
+
+    vector<int> nums;
+
+    for (int i = 0; i < n; ++i)
+    {
+        char op;
+        cin >> op;
+
+        if (op == 'I')
+        {
+            int num;
+            cin >> num;
+            nums.push_back(num);
+        }
+        else if (op == 'Q')
+        {
+            if (nums.size() >= k)
+            {
+                sort(nums.begin(), nums.end(), greater<int>());
+                cout << nums[k - 1] << endl;
+            }
+        }
+    }
+
+    return 0;
+}