diff --git "a/LiiNi-coder/202512/13 PGM \355\212\234\355\224\214.md" "b/LiiNi-coder/202512/13 PGM \355\212\234\355\224\214.md"
new file mode 100644
index 00000000..0f00cc25
--- /dev/null
+++ "b/LiiNi-coder/202512/13 PGM \355\212\234\355\224\214.md"	
@@ -0,0 +1,25 @@
+import java.util.*;
+
+class Solution {
+    public int[] solution(String s) {
+        s = s.substring(2, s.length() - 2);
+        String[] groups = s.split("}", "{");
+
+        Arrays.sort(groups, (a, b) -> a.length() - b.length());
+        Set<Integer> used = new HashSet<Integer>();
+        int[] answer = new int[groups.length];
+        int index = 0;
+        for(String group : groups){
+            String[] nums = group.split(",");
+            for(String num : nums){
+                int value = Integer.parseInt(num);
+                if(!used.contains(value)){
+                    used.add(value);
+                    answer[index++] = value;
+                    break;
+                }
+            }
+        }
+        return answer;
+    }
+}