spoj#UCBINTB. Car Game
Car Game
Traveling by car can sometimes be very boring. The natural cure for this boredom is to play a word
game. In the following example the winner is he or she who has won the most rounds when the car stops.
Each round starts with someone reading out loud the three letters on the license plate of an oncoming
car. Whoever is first to say a word containing those letters in the same order wins the round. On the
last road trip you failed miserably in this game, but this time you will be more prepared.
For each set of three letters find the first word in a dictionary that contains these letters in the same
order.
Input
The first line of input contains two positive integers (N ≤ 5000) and (M ≤ 10000), the number of words
in the dictionary and the number of license plates to be handled. Each of the following N lines contains
a word from the dictionary, a string no more than 100 characters long containing only lower case letters
from the English alphabet. This is followed by M lines each containing a string of three uppercase letters
from the English alphabet, representing a license plate.
Output
For each license plate in the input you should output one line containing either the first valid word in
the dictionary or the sentence "No valid word" if no such word exists.
Example
Input: 5 3 banana car sand uncharacteristically counterrevolutionaries RRR DNA SND</p>Output: counterrevolutionaries No valid word sand