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  • For those of us "math challanged" you denominations must not have any common factors. i.e. all even, all multiples of some N. Otherwise there is an infinite number of prices which you can't buy:-(

  • In a more obscure vein. A closed solution for arbitrary M has been shown to be NP-hard.

    starbolin


    In reply to Re^2: Golf: Buying with exact change by Anonymous Monk
    in thread Golf: Buying with exact change by blokhead

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