PROGRAMMING:Zigzag output string

This problem requires you to output a string in the form of "Z".
For example, for the string 'abcdefghij', if the output width is 4, the first line outputs' ABCD ', the second line outputs' hgfe', and the third line outputs' ij ';
If the width is 3, the first line outputs' ABC ', the second line outputs' FDE', the third line outputs' GHI ', and the fourth line outputs' J' (* * J is preceded by two spaces * *).
###Input format:
In the first line, enter a positive integer, $$n, $, no more than $$100 $, indicating the output width.
Enter a string on a line no longer than $$10 ^ 5 $.
###Output format:
Output the string in zigzag. There must be no extra spaces at the end of the line.
###Input example:
```in
ten
ZUCC is the abbreviation of Zhejiang University City College.
```
###Output example:
```out
ZUCC is th
aiverbba e
tion of Zh
inU gnaije
versity Ci
egelloC yt
.
```







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