CF20A.BerOS file system

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.

新型操作系统 BerOS 具有一个很棒的特性：在路径中可以使用任意数量的字符 / 作为分隔符，而不仅限于传统的单个 /。例如，字符串 //usr///local//nginx/sbin// 和 /usr/local/nginx///sbin 是等价的。路径末尾的字符 /（或一串这样的字符）仅在表示根目录时是必需的；根目录可表示为单个字符 /。

若一个路径所含的字符 / 的数量达到最小，则称该路径为规范化路径（normalized）。

你的任务是将给定路径转换为规范化形式。

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.

输入的第一行仅包含小写拉丁字母和字符 /，表示某个目录的路径。所有路径均以至少一个字符 / 开头。给定行的长度不超过 100 个字符，且非空。

The path in normalized form.

归一化形式的路径。