Extra spaces

Given a string. Write a program that will remove that line from all the extra spaces. A space will be assumed odd, if:

• He is at the beginning of the line, until the first word;

• it is in the end of the line after the last word;

• more spaces are located between two words (in other words, if the words are separated by more than one space, then all spaces except one - extra).

Input

Given a string $S$ $(0\le |S|\le 255)$. The string contains only letters and spaces.

Output

Print a string without extra spaces.

Examples