diff --git "a/LiiNi-coder/202510/15 BOJ \353\221\220 \353\260\260 \353\215\224\355\225\230\352\270\260.md" "b/LiiNi-coder/202510/15 BOJ \353\221\220 \353\260\260 \353\215\224\355\225\230\352\270\260.md"
new file mode 100644
index 00000000..41a4dda0
--- /dev/null
+++ "b/LiiNi-coder/202510/15 BOJ \353\221\220 \353\260\260 \353\215\224\355\225\230\352\270\260.md"	
@@ -0,0 +1,38 @@
+```java
+import java.io.*;
+import java.util.*;
+
+public class Main {
+    public static void main(String[] args) throws IOException {
+        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+
+        int n = Integer.parseInt(br.readLine());
+        StringTokenizer st = new StringTokenizer(br.readLine());
+        int[] arr = new int[n];
+        for(int i = 0; i < n; i++){
+            arr[i] = Integer.parseInt(st.nextToken());
+        }
+
+        long answer = 0;
+        while(true){
+            for(int i = 0; i < n; i++){
+                if(arr[i] % 2 == 1){
+                    answer++;
+                    arr[i] -= 1;
+                }
+            }
+            if(Arrays.stream(arr).sum() == 0){
+                break;
+            }
+            for(int i = 0; i<n; i++){
+                arr[i] /= 2;
+            }
+            answer++;
+        }
+        System.out.println(answer);
+        br.close();
+
+    }
+}
+
+```