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题目大致意思

Posted by yzcnyun at 2010-08-24 22:25:53 on Problem 3654
只能尽力给和我一样读英文头大的朋友大致说说题意了~~

输入字符串,以#结束
对每一行,'=','-','+'三个符号左边是大写字母,右边是小写字母
把大写字母当作集合,'='是把左边的这些集合的内容定义为右边的这些字母
'-'是在左边集合中去掉右边的这些字母
'+'是在左边集合中加上右边这些字母
按”条目序号:“输出,输出按字母表顺序,相等的集合把集合名称连续输出,然后只输出一遍集合内容。

我就能理解成这样了,反正这样就能AC了,别的俺也不管了

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