diff --git "a/0224LJH/202509/17 BOJ \354\230\245\355\206\240\353\201\274\353\212\224 \355\206\265\354\213\240\352\265\220\354\234\241\354\235\204 \355\222\200\354\226\264\353\235\274!!.md" "b/0224LJH/202509/17 BOJ \354\230\245\355\206\240\353\201\274\353\212\224 \355\206\265\354\213\240\352\265\220\354\234\241\354\235\204 \355\222\200\354\226\264\353\235\274!!.md"
new file mode 100644
index 00000000..6aa7555c
--- /dev/null
+++ "b/0224LJH/202509/17 BOJ \354\230\245\355\206\240\353\201\274\353\212\224 \355\206\265\354\213\240\352\265\220\354\234\241\354\235\204 \355\222\200\354\226\264\353\235\274!!.md"	
@@ -0,0 +1,71 @@
+```java
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.util.*;
+
+public class Main {
+	
+	static int problemCnt;
+	static Long ans;
+	static long [] arr;
+    
+    public static void main(String[] args) throws NumberFormatException, IOException {
+		init();
+		process();
+		print();
+    }
+    
+    public static void init() throws NumberFormatException, IOException {
+    	BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
+    	problemCnt = Integer.parseInt(br.readLine());
+    	StringTokenizer st = new StringTokenizer(br.readLine());
+    	ans = 1000_000_0000L;
+    	arr = new long[problemCnt];
+    	for (int i = 0; i < problemCnt; i++) {
+    		arr[i] = Long.parseLong(st.nextToken());
+    	}
+
+
+    	
+    }
+    
+    public static void process() { 	
+    	Long st = 1L;
+    	Long end = 1000_000_001L;
+    	Long mid = (st+end)/2;
+    	
+    	while(st < end) {
+    		boolean result = test(mid);
+    		
+    		if (result) {
+    			ans = Math.min(ans, mid);
+    			end = mid;
+    		} else st = mid+1;
+    		
+    		mid = (st+end)/2;
+    		
+    	}
+    }
+
+
+	private static boolean test(Long diff) {
+		long cnt = 0;
+		
+		for (int i = 0; i < problemCnt; i++) {
+			long result = arr[i]/diff;
+			if (arr[i]%diff ==0) result--;
+			cnt += result;
+		}
+		
+		if (cnt >= problemCnt) return false;
+
+
+		return true;
+	}
+
+	public static void print() {
+		System.out.println(ans);
+    }
+}
+```