diff --git "a/ksinji/11 PGM \353\217\204\353\221\221\354\247\210.md" "b/ksinji/202511/11 PGM \353\217\204\353\221\221\354\247\210.md"
similarity index 100%
rename from "ksinji/11 PGM \353\217\204\353\221\221\354\247\210.md"
rename to "ksinji/202511/11 PGM \353\217\204\353\221\221\354\247\210.md"
diff --git "a/ksinji/202511/13 PGM \353\213\250\354\206\215\354\271\264\353\251\224\353\235\274.md" "b/ksinji/202511/13 PGM \353\213\250\354\206\215\354\271\264\353\251\224\353\235\274.md"
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+++ "b/ksinji/202511/13 PGM \353\213\250\354\206\215\354\271\264\353\251\224\353\235\274.md"	
@@ -0,0 +1,24 @@
+```java
+import java.util.*;
+
+class Solution {
+    public int solution(int[][] routes) {
+        Arrays.sort(routes, (a, b) -> Integer.compare(a[1], b[1]));
+        
+        int answer = 0;
+        int camera = Integer.MIN_VALUE;
+        
+        for (int[] r : routes){
+            int s = r[0];
+            int e = r[1];
+            
+            if (camera < s){
+                camera = e;
+                answer++;
+            }
+        }
+        
+        return answer;
+    }
+}
+```