#P10970. [2015杭电多校]The shortest problem
[2015杭电多校]The shortest problem
The shortest problem
Problem Description
In this problem, we should solve an interesting game. At first, we have an integer n, then we begin to make some funny change. We sum up every digit of the n, then insert it to the tail of the number n, then let the new number be the interesting number n. repeat it for t times. When n=123 and t=3 then we can get 123->1236->123612->12361215.
Input
Multiple input. We have two integer n (0<=n<= ) , t(0<=t<=) in each row. When n==-1 and t==-1 mean the end of input.
Output
For each input , if the final number are divisible by 11, output “Yes”, else output ”No”. without quote.
Sample Input
35 2
35 1
-1 -1
Sample Output
Case #1: Yes
Case #2: No
Author
UESTC
Source
2015 Multi-University Training Contest 7