函数用法总结 Initgraph(int width,int height,int flag)初始化函数，第一个是窗口宽度，第二个是窗口高度，前两个是整型，单位是像素，第三个用来控制是否保留控制台黑框，可省略 mousehit() 无参数，返回bool值，检测鼠标是否有未读信息 GetmouseMsg() 无参数，获得鼠标 ...

The creator runs you through three rapid-fire math problems — 9+2, 5+3, 10-6 — then asks you to think of a number between 5 and 12. If you said 7, you're in the majority and you weren't random at all.

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Abstract: In recent years, with a remarkable increase in urban rail transit operations, the issue of energy efficiency in train operations has attained increasing attention. In this study, a two-stage ...