After being promoted from "Friend Finder" to "Chat Moderator"
through nepotism, Mr. DeMello struggles to keep his chat logs civil.
Currently, he has a list of banned words, , and wants to check his assigned messages for them.
Specifically, he wants to know the number of distinct banned words in each message.
Given that he also needs to teach, Mr. DeMello cannot make this program himself, so he assigns you to do it (as the diligent student you are).
Can you help him?
Note: denotes the length of string , and the banned words and messages are case insensitive.
Each message and banned word will be only made of uppercase and lowercase letters.
It is also guaranteed that each banned word is distinct.
For all subtasks:
Subtask 1 [10%]
Subtask 2 [90%]
No additional constraints.
The first line will contain and , the number of banned words and the number of messages.
The next lines will contain , the banned word.
The next lines will contain , the message to check.
Note: Fast I/O might be required to fully solve this problem (e.g., BufferedReader for Java).
Output the number of distinct banned words for each of the messages.
3 2 dO kevInyAng Zain MaxIsGoingToFindZain DoKevinyangIsKevinyang
Explanation for Sample Output
The first message only contains the last banned word:
Zain. The second message contains the first and second banned words:
kevInyAng. Note that the casing is irrelevant.