From 75ab6b2190322f8dd231f578185ccdeccaf1ce36 Mon Sep 17 00:00:00 2001
From: Ren Baoshuo <i@baoshuo.ren>
Date: Sun, 27 Dec 2020 11:05:44 +0800
Subject: [PATCH] =?UTF-8?q?P4305=20[JLOI2011]=E4=B8=8D=E9=87=8D=E5=A4=8D?=
 =?UTF-8?q?=E6=95=B0=E5=AD=97?=
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R44293000
---
 problem/P4305/P4305.cpp | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 problem/P4305/P4305.cpp

diff --git a/problem/P4305/P4305.cpp b/problem/P4305/P4305.cpp
new file mode 100644
index 00000000..83f6d3f6
--- /dev/null
+++ b/problem/P4305/P4305.cpp
@@ -0,0 +1,36 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+inline void read(int& ret) {
+    ret = 0;
+    int f = 1;
+    char ch = getchar();
+    while (!isdigit(ch)) {
+        if (ch == '-') f = -f;
+        ch = getchar();
+    }
+    while (isdigit(ch)) {
+        ret = ret * 10 + ch - '0', ch = getchar();
+    }
+    ret *= f;
+}
+
+int main() {
+    int t;
+    read(t);
+    while (t--) {
+        int n, x;
+        unordered_map<int, bool> m;
+        read(n);
+        for (int i = 0; i < n; i++) {
+            read(x);
+            if (!m[x]) {
+                m[x] = true;
+                printf("%d ", x);
+            }
+        }
+        printf("\n");
+    }
+    return 0;
+}