New Password
题意翻译
小明要修改他的Ugoul密码,要求其密码必须满足以下要求:
1、长度必须是N
2、必须是由小写字母组成
3、共有K种不同的字符
4、任意两个相同字符不可以相连
请你为他构造一个合适的密码,使得密码满足以上条件
题目描述
Innokentiy decides to change the password in the social net "Contact!", but he is too lazy to invent a new password by himself. That is why he needs your help.
Innokentiy decides that new password should satisfy the following conditions:
- the length of the password must be equal to $ n $ ,
- the password should consist only of lowercase Latin letters,
- the number of distinct symbols in the password must be equal to $ k $ ,
- any two consecutive symbols in the password must be distinct.
Your task is to help Innokentiy and to invent a new password which will satisfy all given conditions.
输入输出格式
输入格式
The first line contains two positive integers $ n $ and $ k $ ( $ 2<=n<=100 $ , $ 2<=k<=min(n,26) $ ) — the length of the password and the number of distinct symbols in it.
Pay attention that a desired new password always exists.
输出格式
Print any password which satisfies all conditions given by Innokentiy.
输入输出样例
输入样例 #1
4 3
输出样例 #1
java
输入样例 #2
6 6
输出样例 #2
python
输入样例 #3
5 2
输出样例 #3
phphp
说明
In the first test there is one of the appropriate new passwords — java, because its length is equal to $ 4 $ and $ 3 $ distinct lowercase letters a, j and v are used in it.
In the second test there is one of the appropriate new passwords — python, because its length is equal to $ 6 $ and it consists of $ 6 $ distinct lowercase letters.
In the third test there is one of the appropriate new passwords — phphp, because its length is equal to $ 5 $ and $ 2 $ distinct lowercase letters p and h are used in it.
Pay attention the condition that no two identical symbols are consecutive is correct for all appropriate passwords in tests.