Davenny：~我今天该吃点什么捏~

Description Igor has fallen in love with Tanya. Now Igor wants to show his feelings and write a number on the fence opposite to Tanya’s house. Igor thinks that the larger the number is, the more chanc

Description User ainta loves to play with cards. He has a cards containing letter “o” and b cards containing letter “x”. He arranges the cards in a row, and calculates the score of the deck by the for

Description Sereja has two sequences a and b and number p. Sequence a consists of n integers a1, a2, …, an. Similarly, sequence b consists of m integers b1, b2, …, bm. As usual, Sereja studies the seq

题目大意： 有n堆石子，告诉你它们的size，并且将其他堆的石子放进同一堆的次数不能超过给定的某一数值，问将所有的石子拼成一堆所需要的最小消耗是多少。There are n piles of stones of sizes a1, a2, …, an lying on the table in front of you.During one move you can take one pile a

Description It’s Moonfang’s birthday,and his friends decided to buy him a copy of XianJianQiXiaZhuan V. Since some of friends have more money available than others, nobody has to pay more than he can

Description Given you one n-digital positive integer a,After removing any of them k( k < n) digits, the remaining figures form a new positive integer according to the origin order. For a given n-digit