| double_it : IO () | |
| double_it = do | |
| input <- getLine | |
| let n = the Int (cast input) | |
| printLn (n * 2) |
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| double_it : IO () | |
| double_it = do | |
| input <- getLine | |
| let n = the Int (cast input) | |
| printLn (n * 2) |