> 怎么看怎么这么别扭呢?
> he starts from the leftmost point, then he goes strictly left to right to the rightmost point, and then he goes strictly right back to the starting point.
> 这说的是个啥啊!从最左点从左到又,"stricktly"!!!!到最又点.然后又,"stricktly"回到最左点.好啊.这还用算么?最大边长乘2得了.
> 
> 看看例子,居然是走的三边.2+2倍根5.简直没话说了.