diff --git a/.idea/misc.xml b/.idea/misc.xml
index 639900d..6ff3c25 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
-  <component name="ProjectRootManager">
+  <component name="ProjectRootManager" version="2" project-jdk-name="corretto-17" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/out" />
   </component>
 </project>
\ No newline at end of file
diff --git a/src/src/Main.java b/src/src/Main.java
index 9983b50..067018b 100644
--- a/src/src/Main.java
+++ b/src/src/Main.java
@@ -1,10 +1,8 @@
-import base.Case1;
+import hyeongwon.Case1;
 
 public class Main {
     public static void main(String[] args) {
         Case1 case1 = new Case1();
-
         case1.gameStart(3);
-
     }
 }
\ No newline at end of file
diff --git a/src/src/hyeongwon/Case1.java b/src/src/hyeongwon/Case1.java
new file mode 100644
index 0000000..360888d
--- /dev/null
+++ b/src/src/hyeongwon/Case1.java
@@ -0,0 +1,21 @@
+package hyeongwon;
+
+import java.util.Scanner;
+
+public class Case1 {
+    public void gameStart(int randomNum) {
+        Scanner scanner = new Scanner(System.in);
+        int userInput = 0;
+        do {
+            System.out.println("숫자를 예측하세요.");
+            userInput = scanner.nextInt();
+            if (randomNum < userInput) {
+                System.out.println("DOWN");
+            } else if (randomNum > userInput) {
+                System.out.println("UP");
+            }
+            } while (userInput != randomNum) ;
+            System.out.println("GOOD");
+            System.out.println("정답입니다!");
+        }
+    }
\ No newline at end of file