From 54ff83c27d0ce8f00baa61f2195908099a358a91 Mon Sep 17 00:00:00 2001
From: sh0723 <pshpark12345@naver.com>
Date: Thu, 16 Jul 2026 12:31:35 +0900
Subject: [PATCH] 13144 : List of Unique Numbers solve

---
 src/week5/BOJ13144/BOJ13144_V1.cpp | 33 ++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 src/week5/BOJ13144/BOJ13144_V1.cpp

diff --git a/src/week5/BOJ13144/BOJ13144_V1.cpp b/src/week5/BOJ13144/BOJ13144_V1.cpp
new file mode 100644
index 0000000..317a5f0
--- /dev/null
+++ b/src/week5/BOJ13144/BOJ13144_V1.cpp
@@ -0,0 +1,33 @@
+#include <bits/stdc++.h>
+using namespace std;
+bool visited[100001];
+int inp[100001];
+long long cnt;
+int main() {
+
+    ios_base::sync_with_stdio(false);
+    cin.tie(nullptr);
+    cout.tie(nullptr);
+
+    int N;
+    cin >> N;
+
+    int st=0;
+    for (int i=0; i<N; i++) {
+        cin >> inp[i];
+    }
+
+    for (int ed=0; ed<N; ed++){
+        while(visited[inp[ed]]) {
+            visited[inp[st]] = false;
+            st++;
+        }
+
+        visited[inp[ed]] = true;
+        cnt += (ed - st + 1);
+    }
+
+    cout << cnt;
+
+    return 0;
+}
\ No newline at end of file