diff --git a/w5/AI学习报告.txt b/w5/AI学习报告.txt
deleted file mode 100644
index e69de29..0000000
diff --git a/w5/Shape.java b/w5/Shape.java
new file mode 100644
index 0000000..adc8984
--- /dev/null
+++ b/w5/Shape.java
@@ -0,0 +1,3 @@
+public abstract class Shape {
+    public abstract void draw();
+}
\ No newline at end of file
diff --git a/w5/ShapeCalculator.java b/w5/ShapeCalculator.java
deleted file mode 100644
index 50fdd4b..0000000
--- a/w5/ShapeCalculator.java
+++ /dev/null
@@ -1,56 +0,0 @@
-package w5;
-
-public class ShapeCalculator {
-    abstract class Shape {
-        public abstract double getArea();
-    }
-    class Circle extends Shape {
-        private double radius;
-        public Circle(double radius) {
-            this.radius = radius;
-        }
-        @Override
-        public double getArea() {
-            return Math.PI * radius * radius;
-        }
-    }
-    class Rectangle extends Shape {
-        private double width;
-        private double height;
-        public Rectangle(double width, double height) {
-            this.width = width;
-            this.height = height;
-        }
-        @Override
-        public double getArea() {
-            return width * height;
-        }
-    }
-    class Triangle extends Shape {
-        private double base;
-        private double height;
-        public Triangle(double base, double height) {
-            this.base = base;
-            this.height = height;
-        }
-        @Override
-        public double getArea() {
-            return 0.5 * base * height;
-        }
-    }
-    class ShapeUtil {
-        public static void printArea(Shape shape) {
-            System.out.println("图形面积为：" + shape.getArea());
-        }
-    }
-    public static void main(String[] args) {
-        ShapeCalculator calculator = new ShapeCalculator();
-        Shape circle = calculator.new Circle(5);
-        Shape rectangle = calculator.new Rectangle(4,6);
-        Shape triangle = calculator.new Triangle(3,8);
-        System.out.println("====== 图形面积计算器 ======");
-        ShapeUtil.printArea(circle);
-        ShapeUtil.printArea(rectangle);
-        ShapeUtil.printArea(triangle);
-    }
-}
diff --git a/w5/~$ DOCX 文档.docx b/w5/~$ DOCX 文档.docx
deleted file mode 100644
index bca0f96..0000000
Binary files a/w5/~$ DOCX 文档.docx and /dev/null differ
diff --git a/w5/屏幕截图 2026-03-29 224240.png b/w5/屏幕截图 2026-03-29 224240.png
deleted file mode 100644
index 02808fe..0000000
Binary files a/w5/屏幕截图 2026-03-29 224240.png and /dev/null differ
diff --git a/w5/类图.jpg b/w5/类图.jpg
deleted file mode 100644
index c5e2fee..0000000
Binary files a/w5/类图.jpg and /dev/null differ
diff --git a/w5/组合与继承.docx b/w5/组合与继承.docx
deleted file mode 100644
index bad5869..0000000
Binary files a/w5/组合与继承.docx and /dev/null differ