838. 堆排序

https://www.acwing.com/problem/content/submission/code_detail/7418242/

AcWing/838/838.cpp

@@ -0,0 +1,21 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+int n, m, t;
+map<int, int> a;
+
+int main() {
+    cin >> n >> m;
+    for (int i = 0; i < n; i++) {
+        cin >> t;
+        a[t]++;
+    }
+    for (auto it = a.begin(); it != a.end(); it++) {
+        for (int i = 0; i < it->second && m; i++, m--) {
+            cout << it->first << ' ';
+        }
+    }
+    cout << endl;
+    return 0;
+}