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  1. import List
  2. import Control.Monad
  3. subs = filterM $ const [True, False]
  4. main = print $ sort $ subs [1..3]
  5.  
Success #stdin #stdout 0.01s 3612KB
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Standard input is empty
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[[],[1],[1,2],[1,2,3],[1,3],[2],[2,3],[3]]
https://ideone.com/DTlEF
language:
Haskell (ghc 8.4.4)
created:
11 years ago
visibility:
secret

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