diff --git "a/lkhyun/202512/10 PGM Lv2 \354\210\253\354\236\220\354\235\230 \355\221\234\355\230\204.md" "b/lkhyun/202512/10 PGM Lv2 \354\210\253\354\236\220\354\235\230 \355\221\234\355\230\204.md"
new file mode 100644
index 00000000..937641e5
--- /dev/null
+++ "b/lkhyun/202512/10 PGM Lv2 \354\210\253\354\236\220\354\235\230 \355\221\234\355\230\204.md"	
@@ -0,0 +1,20 @@
+```java
+class Solution {
+    public int solution(int n) {
+        int answer = 0;
+        int start = 0, end = 0;
+        int sum = 0;
+        while(end <= n){
+            if(sum == n){
+                answer++;
+                sum += ++end;
+            }else if(sum < n){
+                sum += ++end;
+            }else{
+                sum -= ++start;
+            }
+        }
+        return answer;
+    }
+}
+```