From 79c351244a8b89c76031d14cdff50d9aaeffe20e Mon Sep 17 00:00:00 2001
From: lkhyun <102892446+lkhyun@users.noreply.github.com>
Date: Sat, 22 Nov 2025 23:19:07 +0900
Subject: [PATCH] =?UTF-8?q?[20251122]=20PGM=20/=20Lv2=20/=20=EA=B8=B0?=
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 =?UTF-8?q?=EA=B0=95=ED=98=84?=
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---
 ...0\352\265\255 \354\204\244\354\271\230.md" | 26 +++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 "lkhyun/202511/22 PGM Lv2 \352\270\260\354\247\200\352\265\255 \354\204\244\354\271\230.md"

diff --git "a/lkhyun/202511/22 PGM Lv2 \352\270\260\354\247\200\352\265\255 \354\204\244\354\271\230.md" "b/lkhyun/202511/22 PGM Lv2 \352\270\260\354\247\200\352\265\255 \354\204\244\354\271\230.md"
new file mode 100644
index 00000000..bc6c39b0
--- /dev/null
+++ "b/lkhyun/202511/22 PGM Lv2 \352\270\260\354\247\200\352\265\255 \354\204\244\354\271\230.md"	
@@ -0,0 +1,26 @@
+```java
+class Solution {
+    public int solution(int n, int[] stations, int w) {
+        int answer = 0;
+        
+        int idx = 1;
+        for(int station : stations){
+            if(idx < station - w){
+                answer += install(idx,station-w-1,w);
+            }
+            idx = station+w+1;
+            if(station+w >= n) break;
+        }
+        if(idx <= n){
+            answer += install(idx,n,w);
+        }
+
+        return answer;
+    }
+    public int install(int start, int end, int w){
+        int range = end - start + 1;
+        int size = w*2 + 1;
+        return range%size != 0 ? range/size + 1 : range/size;
+    }
+}
+```