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攻防世界 MISC 进阶区 can_has_stdio?
2022-07-04 22:17:00 【春风拂槛露华浓。】
can_has_stdio?
给的附件解压是无后缀文件,用txt打开
应该是种加密,上网查了下,叫BrainFuck
参考BrainFuck 知识
主要由这些字符构成:
“>”: 指针位置右移一位
“<”: 指针位置左移一位
+: 指针所指向的位置里面的值加1
-: 指针所指向的位置里面的值减1
. :输出指针当前位置指向单元格中的内容
[: 如果指针指向的单元值为零,向后跳转到对应的]指令的次一指令处
]:如果指针指向的单元值不为零,向前跳转到对应的[指令的次一指令处(额…好像比较难理解,只是用于循环某一段代码而已,两个一般联合使用)
解密网址
解密:
得到flag
flag{
esolangs_for_fun_and_profit}
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