这个题的意思是让你找到一个k大于n并且能写成 2 a 3 ......

ACM思维题训练集合 The Little Elephant has got a problem — somebody has been touching his sorted by non-decreasing array a of length n and possibly swapped some elemen...

Little Vasya had n boxes with balls in the room. The boxes stood in a row and were numbered with numbers from 1 to n from left to right.

A. New Year Table time limit per test2 seconds memory limit per test256 megabytes inputstandard input outputstandard output Gerald is setting the New Year ...

C. New Year Snowmen time limit per test2 seconds memory limit per test256 megabytes inputstandard input outputstandard output As meticulous Gerald sets the...

E. Anniversary time limit per test2 seconds memory limit per test256 megabytes inputstandard input outputstandard output There are less than 60 years left ...

Farmer John has been informed of the location of a fugitive cow and wants to catch her immediately. He starts at a point N (0 ≤ N ≤ 100,000) on a number line an...

在一个给定形状的棋盘（形状可能是不规则的）上面摆放棋子，棋子没有区别。要求摆放时任意的两个棋子不能放在棋盘中的同一行或者同一列，请编程求解对于给定形状和大小的棋盘，摆放k个棋子的所有可行的摆放方案C。...

You are trapped in a 3D dungeon and need to find the quickest way out! The dungeon is composed of unit cubes which may or may not be filled with rock. It takes ...

Ignatius被魔王抓走了,有一天魔王出差去了,这可是Ignatius逃亡的好机会.  魔王住在一个城堡里,城堡是一个A*B*C的立方体,可以被表示成A个B*C的矩阵,刚开始Ignatius被关在(0,0,0)的位置,离开城堡的门在(A-1,B-1,C-1)...