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悲剧 ,没看题 ,以为就是以前做的 wa了3次 , 注意存储矩阵中每个数减去平均数 ans= sum( a[i]>0 ) such as: 6 5 2 4 1 7 5 => 6 1 -2 0 -3 3 1 => ans=1+3+1=5 =>AC Followed by:
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