15 人解决，33 人已尝试。
17 份提交通过，共有 63 份提交。
6.3 EMB 奖励。
单点时限: 2.0 sec
内存限制: 256 MB
Allis and Bawb are chatting with each other over an internet connection, but something seems fishy. Allis types a message to Bawb on the keyboard and presses “Send”, but when Bawb’s reply comes back, it is mixed together with the original message sent by Allis. For example, if Allis says
Hello, Bawb.
and Bawb replies with
Howdy, Allis!
then Allis might instead receive something like this:
HelHowdylo,, Bawb All.is!
This is very hard to read. Help Allis decypher Bawb’s replies.
The first line of input gives the number of cases, $N$. $N$ test cases follow. Each one consists of two lines: the original message sent to Allis and the reply she receives. $1 \le N \le 30$; Each line will contain between $0$ and $100$ characters.
For each test case, print Case #b:, followed by Bawb’s reply. If there are multiple possible answers, or if there is no answer at all, print UNKNOWN instead.
6 Hello, Bawb. HelHowdylo,, Bawb All.is! ALLIS ABLALWIBS 0123456789 0123456789!@#$%^*()_+ AAA AAAxxxAAA AAA AAAAAAAAA Hello. Hello.
Case #1: Howdy, Allis! Case #2: BAWB Case #3: !@#$%^*()_+ Case #4: UNKNOWN Case #5: AAAAAA Case #6:
15 人解决，33 人已尝试。
17 份提交通过，共有 63 份提交。
6.3 EMB 奖励。