AIOC Banner

Problem: Encyclopædia

Want to try solving this problem? You can submit your code online if you log in or register.

The problems in this set are designed to be more accessible to beginning coders. As a learning aid, walkthroughs discussing how to solve the problems in this set are available by clicking on this link. On completion of this problem set, students should have experience at using arrays to store, search through, and manipulate large data sets.


Input File: encyin.txt
Output File: encyout.txt
Time Limit: 1 second

Once again it is quiz night at the My Very First Encyclopedia Appreciation Society. For week after week, you have turned up to these quizzes, deftly answering question after question about zoo animals and days of the week, only for someone else to answer all the obscure bonus-round questions at the end, snatching first place and leaving you with nothing but a 'Nice Try!' sticker.

Dejected and disheartened, you are sitting at home musing upon your past failures, when a thought occurs to you. Could it be...? Riffling through months of angrily scribbled notes, you confirm your sneaking suspicion - the bonus questions follow a super-simple pattern! Your heart skips a beat. Every question in every bonus round of every quiz you've sat through has been phrased in the form: "How many words are there on page x of the My Very First Encyclopedia?" Normally you would consider that a little unlikely, even contrived, but not today - today you have a Mars bar to win.

With infinite care you compile a list of page numbers and their corresponding word counts. Others in your place might try to memorise the list, but no, your plan is far more hi-tech: first, you will write a program that can answer these questions for you; then, you will sneak your trusty laptop into the quiz, and proceed to blitz the competition.

All that's left is for you to actually write the program. The task seems simple: it has to take your list of numbers and tonight's bonus questions, and - quietly - print out the correct answers for you.


The first line of the input will be of the form n q, where n is the number of pages in the encyclopedia, and q is the number of questions to be answered. (1 <= n, q <= 10,000)

Following this will be n lines, each describing a single page. The ith of these lines will contain the single integer pi, the number of words on page i. (0 <= pi <= 2,000,000,000)

Following this will be q lines, each describing a single question. Each of these lines will contain a single integer x, representing the question, "How many words are there on page x?" (1 <= x <= n)


For each question, your program should write a single line of output. This line should contain a single integer, the number of words on the requested page.

Sample Input

6 5

Sample Output



The score for each input file will be 100% if the correct answer is written to the output file and 0% otherwise.


Privacy statement
© Australian Mathematics Trust 2001-2023

Page generated:  3 June 2023,  2:00pm AEST