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Posted by xuchang at 2010-08-19 12:55:07 on Problem 1029
只要考虑下面几组情况:
1.等号两边的都不可能是假
2.不等号两边的币之外的所有币都是真的
3.在同一种不等号两边都出现过的都是真的 
4.测试数据中没有不符合逻辑的
只要按上面三条原则那写,必定AC

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