Snake to Camel Case Conversion

Given a string in snake_case format, convert it to camelCase. In camelCase formatting, the first word is in lowercase and each subsequent word starts with an uppercase letter. For example, converting "hello_world" results in "helloWorld".

Constraints: The input string contains only lowercase letters and underscores. There will be no leading or trailing underscores and no consecutive underscores.

Note: Use standard input (stdin) to read the input and standard output (stdout) to display the result.

inputFormat

The input consists of a single line containing a snake_case string.

Example:

hello_world

outputFormat

The output is a single line containing the camelCase version of the input string.

Example:

helloWorld

## sample

hello

hello