Problem Description

This is a problem from ZOJ 1499.To make it easyer,you just need output the last number.If there are leading zeros you should delete it.

Input

Input will consist of multiple test cases. Each case will consist of one line, containing a string of digits of maximum length 80. A line consisting of a single 0 terminates input.

Output

For each instance,output the last number.

3456 
3546 
3526 
0001 
100000101

6
46
26
1
101