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注意精度,在这样对精度要求较高的题目中,最好少用除法,本人输入中用除法过多,wa了很多次,改后ac,而对于加eps反而wa,个人认为可能是因为它的ph值能达到14,也就是-log10(1e-14),相信很多人不会eps设的这么小。rt Followed by: Post your reply here: |
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