Sample Problem 0 - Zero

 

Why do we need zeros if they mean nothing?

Input file specification

The input consists of a number of lines, each containing a positive integer n of at most 1,000 digits. The input ends with a single line with a number -1.

Output file specification

For each input number n, print a single number obtained by removing all zeros in n.

Example

Input file:

123
100
10304050100
-1
 

Output file:

123
1
13451