167. To Lower Case

Given a string s, return the string with all uppercase English letters converted to lowercase.

Input: A single string s.

Output: The string with all characters converted to lowercase.

Examples

Example 1

Input: Hello
Output: hello
Explanation: H→h, rest unchanged.

Example 2

Input: LOVELY
Output: lovely
Explanation: All uppercase → all lowercase.

Example 3

Input: already
Output: already
Explanation: No uppercase chars; string unchanged.