2008年8月3日星期日

ZJU/ZOJ 1520 Duty Free Shop 解题报告

题目大意是两种巧克力分别有m颗和l颗,给出n个盒子的容量,问能否用这两种巧克力填满n个盒子,要求不能混填,巧克力可以有剩余。如能填满输出任一方案。

显然如果∑c[i](1<=i<=n)>m+l则必然无解。用盒子作为填充量,第一种巧克力作为背包,套用0/1背包模型用DP求解,如果∑c[i]-最大填充量>l则无解。否则按照DP过程中的记录量倒推出具体的方案输出。

3019542 2008-08-03 15:07:21 Accepted 1520 FPC 00:00.02 412K IwfWcf

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