'commit'

TangDou/XiTi/1369.cpp

@@ -0,0 +1,22 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+int a[20000] = {0};
+
+int main() {
+    int n;
+    cin >> n;
+    unordered_map<int, int> _map;
+    for (int i = 0; i < n; ++i) {
+        cin >> a[i];
+    }
+    for (int i = 0; i < n; ++i) {
+        if (_map.count(a[i]) == 0) {
+            cout << a[i] << " ";
+        }
+        _map[a[i]]++;
+    }
+    cout << endl;
+    return 0;
+}