此序言优化解决方案出了什么问题? [英] Whats wrong with this prolog optimization solution?

问题描述

solve(Amounts) :-
    Total = 1505,
    Prices = [215, 275, 335, 355, 420, 580],

    length(Prices, N),
    length(Amounts, N),
    Amounts :: 0..Total//min(Prices),
    Amounts * Prices #= Total,

    labeling(Amounts).

推荐答案

没有问题.此示例来自 http://eclipseclp.org/examples/xkcd287.ecl.txt，并且如果您没有省略该行

There is nothing wrong with it. It is the example from http://eclipseclp.org/examples/xkcd287.ecl.txt, and if you hadn't omitted the line

:- lib(ic).

加载间隔约束求解器，它将正常工作在 ECLiPSe 序言中.

which loads the interval constraint solver, it would work just fine in ECLiPSe Prolog.

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