Given any string of N (≥) 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 n​1​​ characters, then left to right along the bottom line with n​2​​ characters, and finally bottom-up along the vertical line with n​3​​ characters. And more, we would like U to be as squared as possible -- that is, it must be satisfied that n​1​​=n​3​​=max { k | k≤n​2​​ for all 3 } with n​1​​+n​2​​+n​3​​−2=N.

Input Specification:

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.

Output Specification:

For each test case, print the input string in the shape of U as specified in the description.

Sample Input:

helloworld!

Sample Output:

h   !
e d
l l
lowor
#include <iostream>
using namespace std;
int main()
{
/**读题
n1,n2,n3
n1=n3=height
n2=width
height=max(k|k<=width,3<=width<=N)
2*height+width-2=N
尽可能方形
*/
string s;
cin>>s;
int N=s.length(),width,height,left=,right=N-;
for(int i=;;i++){
if(*i->N){
height=i-;
width=N+-*height;
break;
}
}
for(int j=;j<height;j++){
if(j!=height-){
cout<<s[left];
for(int i=;i<width-;i++) cout<<" ";
cout<<s[right]<<endl;
left++;right--;
}else{
for(int i=left;i<=right;i++){
cout<<s[i];
}
}
}
system("pause");
return ;
}

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