4006: BerOS file system
题目描述
The new operating system BerOS has a nice feature. It is possible to use any number of characters '/' as a delimiter in path instead of one traditional '/'. For example, strings //usr///local//nginx/sbin// and /usr/local/nginx///sbin are equivalent. The character '/' (or some sequence of such characters) at the end of the path is required only in case of the path to the root directory, which can be represented as single character '/'.
A path called normalized if it contains the smallest possible number of characters '/'.
Your task is to transform a given path to the normalized form.
The first line of the input contains only lowercase Latin letters and character '/'− the path to some directory. All paths start with at least one character '/'. The length of the given line is no more than 100 characters, it is not empty.
The path in normalized form.
//usr///local//nginx/sbin
/usr/local/nginx/sbin