Time limit 2000/4000/4000/4000 ms. Memory limit 65000/65000/65000/65000 Kb.
Question by Ibrahim Mesecan.
Top Question
Your friend works as a teacher in a school
and he organizes multiple choice exams
throughout the school and he needs
your support for his multiple choice exams.
He records student answers in a file and
he wants to see the top solved question
Question:
Write a program that reads n exams for n
students and it prints the top solved question.
Input specification
At the beginning, you will be given two numbers
(n and m). Next line contains m space separated
letters which are the correct answers of the exam.
The following n lines contain the answers of n students.
The student answers can be a letter from A to Z
where 1 ≤ n ≤ 1,000 and 1 ≤ m ≤ 100.
Output specification
Show the number of the top solved question.
Note: Show the first occurrence,
if there are several
questions with the same result.
Sample Input I
3 5
C E D E C
C E D B A
B E D E C
C E D E C
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Sample Output I
2
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Explanation: All students answered
second and third questions correctly. So, the first top
solved question is the second question.
Для отправки решений необходимо выполнить вход.
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