CCC '11 S2 - Multiple Choice

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Points: 3 (partial)
Time limit: 2.0s
Memory limit: 256M
Problem type
Canadian Computing Competition: 2011 Stage 1, Senior #2

Your teacher likes to give multiple choice tests. One benefit of giving these tests is that they are easy to mark, given an answer key. The other benefit is that students believe they have a one-in-five chance of getting the correct answer, assuming the multiple choice possibilities are A, B, C, D or E.

Write a program that your teacher can use to grade one multiple choice test.

Input Specification

The input will contain the number N (0 < N < 10\,000) followed by 2N lines. The 2N lines are composed of N lines of student responses (with one of A, B, C, D or E on each line), followed by N lines of correct answers (with one of A, B, C, D or E on each line), in the same order as the student answered the questions (that is, if line i is the student response, then line N+i will contain the correct answer to that question).

Output Specification

Output the integer C (0 \le C \le N) which corresponds to the number of questions the student answered correctly.

Sample Input 1

3
A
B
C
A
C
B

Output for Sample Input 1

1

Sample Input 2

3
A
A
A
A
B
A

Output for Sample Input 2

2

Comments


  • 0
    MomoBit  commented on March 15, 2025, 5:27 p.m.

    Hey everyone, use AI to understand the question, not just to look for the answer. Ask the AI for explanations—it helps me a lot.


  • -4
    iuni__  commented on March 14, 2025, 1:28 p.m.

    Why are problems in this website written so terribly? This one in particular made me want to tear my hair out. Unreal...


  • -30
    4c696e68616e  commented on Sept. 6, 2024, 2:58 p.m. ← edited

    This comment is hidden due to too much negative feedback. Show it anyway.


  • -4
    amei  commented on July 18, 2024, 2:21 p.m.

    people will copy paste it and get free points


  • -2
    cjneuen  commented on July 10, 2024, 6:22 p.m. ← edit 2

    I do not understand why I am getting an IndexError when I run this in the solution. It works just fine in VSCode


    • 0
      Joe_C137  commented on March 25, 2025, 10:46 p.m.

      I'm getting the same IndexError and my code works fine in Mu Editor. Were you able to figure out what was going wrong?


    • 1
      0id  commented on July 10, 2024, 8:46 p.m.

      Don't post your solution here