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一 原题Party LampsIOI 98To brighten up the gala dinner of the IOI'98 we have a set of N (10 N.The lamps are connected to four buttons:Button 1: When this button is pressed, all the lamps

一 原题Healthy HolsteinsBurch & KolstadFarmer John prides himself on having the healthiest dairy cows in the world. He knows the vitamin content for one scoop of each feed type and the minimum da

一. 原题Superprime RibButchering Farmer John's cows always yields the best prime rib. You can tell prime ribs by looking at the digits lovingly stamped across them, one by one, by FJ and the US

一. 原题Arithmetic ProgressionsAn arithmetic progression is a sequence of the form a, a+b, a+2b, ..., a+nb where n=0,1,2,3,... . For this problem, a is a non-negative integer and b is a positive

一. 原题Ski Course DesignFarmer John has N hills on his farm (1 Unfortunately, FJ has just found out about a new tax that will be assessed next year on farms used as ski training camps. Upon

一 原题Calf FlacIt is said that if you give an infinite number of cows an infinite number of heavy-duty laptops (with very large keys), that they will ultimately produce all the world's great palindr...