以此图中的人物风格，设计动画，讲解指令的执行过程---**Textual Information:** * **Chalkboard Title:** 时间复杂度计算 (Time Complexity Calculation) * **Watermark:** 豆包AI生成 (Doubao AI Generated) **Chart/Diagram Description:** * **Type:** Chalkboard drawing with text and simple sketches. * **Main Elements:** * **Chalkboard:** Rectangular, black surface with a wooden frame, mounted on a wall. * **Text:** White text "时间复杂度计算" (Time Complexity Calculation) written prominently at the top center of the chalkboard. * **Sketches:** * On the left side, below the text, a curved line sketch resembling a checkmark or hook. * On the right side, below the text, a sketch resembling a simplified footprint or boot outline with a line connecting it to the top edge. * **Objects on Ledge:** Several pieces of white chalk and one yellow eraser are placed on the wooden ledge at the bottom of the chalkboard. * **Character:** A 3D rendered cartoon boy with dark hair, a white t-shirt, blue jeans, and black and white sneakers stands in front of the chalkboard, smiling. * **Background:** A white wall is behind the chalkboard. A wooden floor is in the foreground.