題目鏈接：https://codeforces.com/contest/1166/problem/B

B. All the Vowels Please

time limit per test

1 second

memory limit per test

256 megabytes

input

standard input

output

standard output

Tom loves vowels, and he likes long words with many vowels. His favorite words are vowelly words. We say a word of length?kk?is vowelly if there are positive integers?nn?and?mm?such that?n?m=kn?m=k?and when the word is written by using?nn?rows and?mm?columns (the first row is filled first, then the second and so on, with each row filled from left to right), every vowel of the English alphabet appears at least once in every row and every column.

You are given an integer?kk?and you must either print a vowelly word of length?kk?or print??1?1?if no such word exists.

In this problem the vowels of the English alphabet are 'a', 'e', 'i', 'o' ,'u'.

Input

Input consists of a single line containing the integer?kk?(1≤k≤1041≤k≤104)?— the required length.

Output

The output must consist of a single line, consisting of a vowelly word of length?kk?consisting of lowercase English letters if it exists or??1?1?if it does not.

If there are multiple possible words, you may output any of them.

Examples

input

Copy

7

output

Copy

-1

input

Copy

36

output

Copy

agoeuioaeiruuimaeoieauoweouoiaouimae

Note

In the second example, the word "agoeuioaeiruuimaeoieauoweouoiaouimae" can be arranged into the following?6×66×6?grid:

It is easy to verify that every row and every column contain all the vowels.

?

思路：最最重要的，找出5*5的圖表，之后就按順序循環輸出即可。

?

a	e	i	o	u	a
e	i	o	u	a	e
i	o	u	a	e	i
o	u	a	e	i	o
u	a	e	i	o	u
a	e	i	o	u	a

?

代碼：

#include<iostream>#include<algorithm>#include<string>#include<cmath>using namespace std;int main(){int fla = 0;int m, n;int k;cin >> k;for (int i = 5; i <= sqrt(k); i++){if (k%i == 0){m = i;n = k / i;fla = 1;break;}}if (fla == 0)cout << -1;else{for (int i = 1; i <= m; i++){if (i % 5 == 1){for (int j = 1; j <= n; j++){if (j % 5 == 1)cout << "a";if (j % 5 == 2)cout << "e";if (j % 5 == 3)cout << "i";if (j % 5 == 4)cout << "o";if (j % 5 == 0)cout << "u";}}if (i % 5 == 2){for (int j = 1; j <= n; j++){if (j % 5 == 1)cout << "e";if (j % 5 == 2)cout << "i";if (j % 5 == 3)cout << "o";if (j % 5 == 4)cout << "u";if (j % 5 == 0)cout << "a";}}if (i % 5 == 3){for (int j = 1; j <= n; j++){if (j % 5 == 1)cout << "i";if (j % 5 == 2)cout << "o";if (j % 5 == 3)cout << "u";if (j % 5 == 4)cout << "a";if (j % 5 == 0)cout << "e";}}if (i % 5 == 4){for (int j = 1; j <= n; j++){if (j % 5 == 1)cout << "o";if (j % 5 == 2)cout << "u";if (j % 5 == 3)cout << "a";if (j % 5 == 4)cout << "e";if (j % 5 == 0)cout << "i";}}if (i % 5 == 0){for (int j = 1; j <= n; j++){if (j % 5 == 1)cout << "u";if (j % 5 == 2)cout << "a";if (j % 5 == 3)cout << "e";if (j % 5 == 4)cout << "i";if (j % 5 == 0)cout << "o";}}}}}

?

總結

以上是生活随笔為你收集整理的B. All the Vowels Please的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。