Hydro 提交语言，十个有九个假……

关键是 Brainfk 没有什么统一的编译器或解释器啊……我的 BFF for exBrainfk 都是自己写的，能有啥办法呢？

还有 Brainfk也是真的难！

"if": function:
  "condition": +0
  [[->+<]>>something<<]
"else": function:
  >[[-<+>]>something<]<
"for": function:
  "begin": +0
  "end": +1
  "step": +2
  [>-<-]>[>>something<[<-<+>>-]<<[->>+<<]>]
"sum, do not change a and b": function:
  "a": +0
  "b": +1
  "result": +2
  [>>+>+<<<-]>[>+>>+<<<-]>>[<<<+>>>-]>[<<<+>>>-]<<<<