From 8ecbc1730062297314b6deb242f358791984c7a7 Mon Sep 17 00:00:00 2001
From: longrunpc <pcjmo4050@gmail.com>
Date: Wed, 8 Apr 2026 03:17:42 +0900
Subject: [PATCH] =?UTF-8?q?Solve(binary=5Fsearch):=20BOJ=2011722=20"?=
 =?UTF-8?q?=EA=B0=80=EC=9E=A5=20=EA=B8=B4=20=EA=B0=90=EC=86=8C=ED=95=98?=
 =?UTF-8?q?=EB=8A=94=20=EB=B6=80=EB=B6=84=20=EC=88=98=EC=97=B4"=20?=
 =?UTF-8?q?=EB=AC=B8=EC=A0=9C=20=ED=92=80=EC=9D=B4?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 boj/solved/binary_search/11722/Main.java | 44 ++++++++++++++++++++++++
 1 file changed, 44 insertions(+)
 create mode 100644 boj/solved/binary_search/11722/Main.java

diff --git a/boj/solved/binary_search/11722/Main.java b/boj/solved/binary_search/11722/Main.java
new file mode 100644
index 0000000..4917cc1
--- /dev/null
+++ b/boj/solved/binary_search/11722/Main.java
@@ -0,0 +1,44 @@
+import java.io.*;
+import java.util.*;
+
+class Main {
+    static int n;
+    static int[] arr;
+    static List<Integer> res = new ArrayList<>();
+    public static void main(String[] args) throws IOException {
+        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+        n = Integer.parseInt(br.readLine());
+        StringTokenizer st = new StringTokenizer(br.readLine());
+
+        arr = new int[n];
+        res.add(arr[0]);
+        for(int i = 0;i<n;i++) {
+            int tmp = Integer.parseInt(st.nextToken());
+            if (res.get(res.size()-1) > tmp) {
+                res.add(tmp);
+            }
+            else {
+                res.set(binarySearch(tmp), tmp);
+            }
+        }
+        
+        System.out.println(res.size());
+    }
+
+    public static int binarySearch(int num) {
+        int l = 0;
+        int r = res.size()-1;
+        int pointIdx = res.size()-1;
+        while(l <= r) {
+            int mid = (l + r) / 2;
+            if (res.get(mid) > num) {
+                l = mid +1;
+            }
+            else {
+                r = mid - 1;
+                pointIdx = Math.min(pointIdx, mid);
+            }
+        }
+        return pointIdx;
+    }
+}
\ No newline at end of file