英语翻译The numbers 1,2,3,4,5 are to be arranged in a circle.An

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英语翻译
The numbers 1,2,3,4,5 are to be arranged in a circle.An arrangement is bad if it is not true that for every from to one can find a subset of the numbers that appear consecutively on the circle that sum to .Arrangements that differ only by a rotation or a reflection are considered the same.How many different bad arrangements are there?
主要是第二句看不太懂,
The numbers 1,2,3,4,5 are to be arranged in a circle.An arrangement is bad if it is not true that for every n from 1 to 15 one can find a subset of the numbers that appear consecutively on the circle that sum to n.Arrangements that differ only by a rotation or a reflection are considered the same.How many different bad arrangements are there?
前面的漏了几个字，看这里

就是说1 2 3 4 5五个数字排成一圈.
然后呢有一种叫bad arrangement,
先说怎么样不是bad arrangement吧,不是bad arrangement的安排必须满足从1到15,每个数字,都是在这个圈里可以找到的连续几个数字的和.比如这个数字圈是31524（3）那么1~5都没问题,6=1+5,7=5+2,8=1+5+2,9=3+1+5,但是10就找不到了,说明我这个排列不对.总之你要排出一个满足从1~15的每个数字都可以在这个圈里找到加起来等于它的连续的几个数字.
题目问你有多少种bad arrangement 就是问你有多少种是不满足上述要求的.我想你得先找到所有的排列可能,再减掉满足上述要求的排列,就是答案了

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