From 3f5166c479a82b3351b9af310e72e86310c3e3aa Mon Sep 17 00:00:00 2001
From: Ren Baoshuo <i@baoshuo.ren>
Date: Sat, 30 Oct 2021 19:25:07 +0800
Subject: [PATCH] =?UTF-8?q?4003.=20=E5=AE=8C=E5=85=A8=E5=B9=B3=E6=96=B9?=
 =?UTF-8?q?=E6=95=B0?=
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https://www.acwing.com/problem/content/submission/code_detail/8527461/
---
 AcWing/4003/4003.cpp | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 AcWing/4003/4003.cpp

diff --git a/AcWing/4003/4003.cpp b/AcWing/4003/4003.cpp
new file mode 100644
index 00000000..a25ddec8
--- /dev/null
+++ b/AcWing/4003/4003.cpp
@@ -0,0 +1,24 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+int n, a[1005], f[1000005];
+
+int main() {
+    cin >> n;
+    for (int i = 1; i <= n; i++) {
+        cin >> a[i];
+    }
+    sort(a + 1, a + 1 + n);
+    for (int i = n; i > 0; i--) {
+        bool flag = false;
+        for (int j = -1000; j <= 1000; j++) {
+            flag = flag || a[i] == 1ll * j * j;
+        }
+        if (!flag) {
+            cout << a[i] << endl;
+            exit(0);
+        }
+    }
+    return 0;
+}