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总算AC了,枚举的时候注意double比较!!!!

Posted by FOR_RITZ at 2006-12-21 14:29:48 on Problem 3039

做最优比较的时候如果是
for(f=0;f<32768;f++)
的话比较 必须用 if(temp-e<-0.0000000001)而不能用if(temp-e<=0.0000000001)
因为比较小的值优先

而如果用
for(f=32767;f>=0;f--)
的话比较 必须用 if(temp-e<0.0000000001)而不能用if(temp-e<=-0.0000000001)

因为这个郁闷了很长时间
细节决定成败啊...

Followed by:

if(temp<e)就AC, if(temp-e<=+-0.0000000001)就WA (0) FOR_RITZ 2006-12-21 14:37:25

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