Rotate String Left

You are given a string s and an integer n. Your task is to rotate the string to the left by n characters. 

The left rotation operation moves the first n characters of the string to the end. For example, rotating "hello" by 2 positions will yield "llohe".

If n is greater than or equal to the length of the string, perform the rotation using modular arithmetic to determine the effective rotation, i.e., \( n \mod |s| \).

Note: If the string is empty or n is less than or equal to 0, return the original string as is.

inputFormat

The input is provided via stdin and consists of two lines:

• The first line contains the string s.
• The second line contains the integer n, denoting the number of positions to rotate.

outputFormat

The output should be printed to stdout and is a single string which is the result of rotating the input string to the left by n characters.

hello
2

llohe