diff --git a/Week05.java b/Week05.java
new file mode 100644
index 0000000..5bfd1b5
--- /dev/null
+++ b/Week05.java
@@ -0,0 +1,139 @@
+package For_Exam;
+
+import java.util.Random;
+import java.util.Scanner;
+
+class Car {
+    protected int speed;
+    protected String name;
+    protected int move;
+    protected int second;
+
+    public Car() {
+    }
+
+    public Car(int speed, String name) {
+        this.speed = speed;
+        this.name = name;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public int getSpeed() {
+        return speed;
+    }
+
+    public int getMove() {
+        return move;
+    }
+
+    public void setMove(int move) {
+        this.move = move;
+    }
+
+    public int getSecond() {
+        return second;
+    }
+
+    public void setSecond(int second) {
+        this.second = second;
+    }
+
+    public void go() {
+        long seed = System.currentTimeMillis();
+        Random random = new Random(seed);
+        for (int i = 0; i < second; i++) {
+            if (random.nextInt(2) == 1) {
+                move += speed;
+            }
+        }
+    }
+
+    public void sayScore() {
+
+        System.out.printf("score: %d\n", move);
+
+    }
+
+}
+
+class SuperCar extends Car {
+    private long seed = System.currentTimeMillis();
+    private Random random = new Random(seed);
+    private Random random2 = new Random(seed);
+    private int count;
+
+    public SuperCar(int speed, String name) {
+        this.speed = speed;
+        this.name = name;
+    }
+
+    public void go() {
+        for (int i = 0; i < getSecond(); i++) {
+            if (random.nextInt(2) == 1) {
+                move += speed;
+                if (random2.nextInt(2) == 1) {
+                    move += speed;
+                    count++;
+                }
+            }
+        }
+    }
+
+    public void sayScore() {
+        System.out.printf("score: %d, booster: %d\n", move, count);
+    }
+
+}
+
+public class Week04 {
+    public static void main(String[] args) {
+        int speed;
+        String name;
+        int second;
+        int isSuper = 0;
+
+        Scanner scanner = new Scanner(System.in);
+        int N;
+        System.out.println("자동차의 갯수를 입력하세요.");
+        N = scanner.nextInt();
+
+        Car[] cars = new Car[N];
+        int count = 0;
+        for (int i = 0; i < cars.length; i++) {
+            System.out.printf("%d번 째 자동차의 스피드를 입력하세요.\n", count + 1);
+            speed = scanner.nextInt();
+            System.out.printf("%d번 째 자동차의 이름을 입력하세요.\n", count + 1);
+            name = scanner.next();
+            System.out.println("이 자동차는 슈퍼카인가요? 0 또는 1 입력");
+            isSuper = scanner.nextInt();
+            if (isSuper == 0)
+                cars[i] = new Car(speed, name);
+            else if (isSuper == 1)
+                cars[i] = new SuperCar(speed, name);
+
+        }
+
+        System.out.println("-----경기 참가자 소개-----");
+        for (int i = 0; i < cars.length; i++) {
+            System.out.printf("스피드는 %d이고, 이름은 %s입니다.\n", cars[i].getSpeed(), cars[i].getName());
+        }
+        System.out.println();
+        System.out.println("경기를 몇 초 동안 진행할까요?");
+        second = scanner.nextInt();
+
+        for (int i = 0; i < cars.length; i++) {
+            cars[i].setSecond(second);
+            cars[i].go();
+        }
+        System.out.println();
+        System.out.println("---최종 결과 발표---");
+        for (int i = 0; i < cars.length; i++) {
+            cars[i].sayScore();
+        }
+
+        scanner.close();
+    }
+}