pragma 题解

U120928 题目链接

此题用来讽刺洛谷禁止#pragma预编译命令,还直接子串匹配。

由于这个字符串被禁了,我们需要一些特殊方法。思考一下,发现JSFuck可以干这个事。

JSFuck可以把任意Javascript转化成只用+![]()这六个字符的代码,不出现任何字母。在http://www.jsfuck.com/上可以进行在线转化,它是在github上开源的,有兴趣了解原理可以去阅读代码。

我们把console.log('pragma')输入进去,点“encode”:

然后把输出的代码复制出来,如下:

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选Node v8.9提交就可以AC了!