这个prolog优化解决方案有什么问题？

Question

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).

Answer 1

没有什么问题.这是来自http://eclipseclp.org/examples/xkcd287.ecl.txt的示例,如果您没有省略该行

:- lib(ic).

加载区间约束求解器,它在ECLiPSe Prolog中可以正常工作.