Remove extra spaces

Given a string. Write a program that will remove all extra spaces from this string. A space will be considered redundant if:

• it is located at the beginning of the line, before the first word;

• it is located at the end of the line, after the last word;

• some spaces are located between words (more simply, if words are separated by more than one space, then all but one space are superfluous).

Input

One string s (0 ≤ |s| ≤ 255) that contains Latin letters and spaces only.

Output

Print the string without extra spaces.

Examples