From a2eaf2838edecf6c551b2cf2b1cb4a2035f53a1b Mon Sep 17 00:00:00 2001
From: Baoshuo <i@baoshuo.ren>
Date: Sat, 26 Mar 2022 19:03:53 +0800
Subject: [PATCH] =?UTF-8?q?4317.=20=E4=B8=8D=E5=90=8C=E6=AD=A3=E6=95=B4?=
 =?UTF-8?q?=E6=95=B0=E7=9A=84=E4=B8=AA=E6=95=B0?=
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https://www.acwing.com/problem/content/submission/code_detail/12513087/
---
 AcWing/4317/4317.cpp | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 AcWing/4317/4317.cpp

diff --git a/AcWing/4317/4317.cpp b/AcWing/4317/4317.cpp
new file mode 100644
index 00000000..4c395e06
--- /dev/null
+++ b/AcWing/4317/4317.cpp
@@ -0,0 +1,20 @@
+#include <iostream>
+#include <set>
+
+using std::cin;
+using std::cout;
+const char endl = '\n';
+
+int n;
+std::set<int> set;
+
+int main() {
+    std::ios::sync_with_stdio(false);
+    cin >> n;
+    for (int i = 1, x; i <= n; i++) {
+        cin >> x;
+        if (x > 0) set.insert(x);
+    }
+    cout << set.size() << endl;
+    return 0;
+}