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Hello World for U (20)

[编程题]Hello World for U (20)
  • 热度指数：2503 时间限制：C/C++ 1秒，其他语言2秒 空间限制：C/C++ 64M，其他语言128M
  • 算法知识视频讲解
Given any string of N (>=5) characters, you are asked to form the characters into the shape of U. For example, "helloworld" can be printed as: 
h  d
e  l
l  r
lowo
That is, the characters must be printed in the original order, starting top-down from the left vertical line with n1 characters, then left to right along the bottom line with n2 characters, and finally bottom-up along the vertical line with n3 characters. And more, we would like U to be as squared as possible -- that is, it must be satisfied that n1 = n3 = max { k| k <= n2 for all 3 <= n2 <= N } with n1 + n2 + n3 - 2 = N.

输入描述:
Each input file contains one test case.  Each case contains one string with no less than 5 and no more than 80 characters in a line.  The string contains no white space.


输出描述:
For each test case, print the input string in the shape of U as specified in the description.
示例1

输入

helloworld!

输出

h   !<br/>e   d<br/>l   l<br/>lowor
算法知识视频讲解
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