From 062c6b20d95b7bbc471ffb793ab4e1c8251e8f9a Mon Sep 17 00:00:00 2001
From: Jihoon Lee <hiyabye0465@gmail.com>
Date: Tue, 20 Aug 2024 22:14:20 +0900
Subject: [PATCH] Add 23275.cpp

---
 23xxx/23275.cpp | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 23xxx/23275.cpp

diff --git a/23xxx/23275.cpp b/23xxx/23275.cpp
new file mode 100644
index 00000000..137f75e5
--- /dev/null
+++ b/23xxx/23275.cpp
@@ -0,0 +1,26 @@
+#include <iostream>
+#include <unordered_set>
+using namespace std;
+
+void solve(void) {
+  int n; cin >> n;
+  unordered_set<int> s;
+  for (int i=0; i<n; i++) {
+    int x; cin >> x;
+    s.insert(x);
+  }
+
+  for (int i=1; i<n; i++) {
+    int x; cin >> x;
+    s.erase(x);
+  }
+  cout << *s.begin();
+}
+
+int main(void) {
+  ios::sync_with_stdio(false);
+  cin.tie(nullptr);
+
+  solve();
+  return 0;
+}
\ No newline at end of file