16 lines
685 B
Haskell
16 lines
685 B
Haskell
inv = [("map",9,150), ("compass",13,35), ("water",153,200), ("sandwich",50,160),
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("glucose",15,60), ("tin",68,45), ("banana",27,60), ("apple",39,40),
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("cheese",23,30), ("beer",52,10), ("cream",11,70), ("camera",32,30),
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("tshirt",24,15), ("trousers",48,10), ("umbrella",73,40), ("trousers",42,70),
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("overclothes",43,75), ("notecase",22,80), ("sunglasses",7,20), ("towel",18,12),
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("socks",4,50), ("book",30,10)]
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combs [] _ = (0, [])
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combs ((name,w,v):rest) cap
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| w <= cap = max skipthis $ prepend (name,w,v) (combs rest (cap - w))
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| otherwise = skipthis
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where prepend (name,w,v) (v2, lst) = (v2 + v, (name,w,v):lst)
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skipthis = combs rest cap
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main = do print $ combs inv 400
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