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DescriptionJosephina is a clever girl and addicted to Machine Learning recently. She pays much attention to a method called Linear Discriminant Analysis, which has many interesting properties.

DescriptionMy birthday is coming up and traditionally I'm serving pie. Not just one pie, no, I have a number N of them, of various tastes and of various sizes. F of my friends are coming to my

DescriptionAfter a day trip with his friend Dick, Harry noticed a strange pattern of tiny holes in the door of his SUV. The local American Tire store sells fiberglass patching material only in s

DescriptionFarmer John is an astounding accounting wizard and has realized he might run out of money to run the farm. He has already calculated and recorded the exact amount of money (1 ≤ moneyi

Description Given a N × N matrix A, whose element in the i-th row and j-th column Aij is an number that equals i2 + 100000 × i + j2 - 100000 × j + i × j, you are to find the M-th smallest element in t

Problem Description In the Dark forest, there is a Fairy kingdom where all the spirits will go together and Celebrate the harvest every year. But there is one thing you may not know that they hate wal

Description “超人”霍华德在NBA扣篮大赛上要求把篮筐升高表演扣篮，但是却没有得到批准，现在我们的hhb也想要给大家表演一个，但是这次他想要表演的是投篮，篮筐放得越高，hhb的表演当然就越精彩，所以现在请你帮助hhb计算出篮筐离地最高能放多高。 假设把球投到篮框的高度就算球进。忽略球和框的大小。Input 多组测试数据 每组测试数据包括3个浮点数h, l, v (1<=h<=

Problem Description Archaeologists find ruins of Ancient ACM Civilization, and they want to rebuild it.The ruins form a closed path on an x-y plane, which has n endpoints. The endpoints locate on (x1,