MWC '15 #5 P3: French Words

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Points:7 (partial)
Time limit:0.5s
Memory limit:256M

Problem type

Salarios77 and AndrewNitu are under suspicion of plagiarism, a serious crime at William Lyon Mackenzie CI. They were supposed to complete a project involving writing French words on a piece of paper in alphabetical order and present their definitions to the class. To see if they truly plagiarized, you are to write a program to determine how many words they share in common.

Input Specification

First line consists of N and M separated by a space (0 \le N, M \le 10^6, number of words on Salarios77's and AndrewNitu's respective projects), followed by N spaced strings on the second line, followed by M spaced strings on the third line.

Output Specification

Output the number of words they share in common.

Sample Input

4 4
a b c d
b c z zz

Sample Output



  • 0
     commented on Aug. 10, 2017 edit 2


    Assuming words in each essay aren't distinct, what would output be in this case:

    5 5

    aa bb bb cc ee

    aa bb ff gg hh