如不如此都如此的博客

入门代码 求和 类似 hello world#includeint main()//求和{ int a,b; while (scanf("%d %d",&a,&b)!=EOF) printf("%d\n",a+b); return 0;}

原题链接题意：求正方形内阴影面积。一个几何题想了无数方法，求角然后还是不会。百度答案，百度出三种都看看，各有各好处。先展示一个最好想的，但是代码有点点麻烦的 点击打开链接 首先连接辅助线方法三-有详解余弦定理求∠1和∠2，然后求三角形用a为边的 大扇形减去大三角形求出小弓形用a/2为边 小扇形减去小三角形求出大

John is a manager of a CPU chip factory, the factory produces lots of chips everyday. To manage large amounts of products, every processor has a serial number. More specifically, the factory produces ...