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Description

玩转字符串，是一个ACMer的基本操作，现在有一个任务，就是把字符串前面的若干个字符转移到字符串的尾部。比如输入字符串abcdefg和数字n=2，该函数将返回左旋转 2 位得到的结果cdefgab

Input

先输入一个字符串 再输入向左旋转次数

Output

输出旋转过后的字符串

Samples

abcdefg
2

cdefgab

Limitation

n小于字符串长度 字符串长度[0,1000]