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  | import sys | |
| print "HELLO WORLD !!!" | |
| for line in sys.stdin: | |
| print line | 
  
    
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  | Require Import Utf8 String ZArith. | |
| (* IO is done through this JSON inductive type *) | |
| Inductive JSON := | |
| | JObject : list (string * JSON) → JSON | |
| | JArray : list JSON → JSON | |
| | JString : string → JSON | |
| | JNumber : Z → JSON | |
| | JBool : bool → JSON | |
| | JNull : JSON. |