백준 14425번

원본 : https://www.acmicpc.net/problem/14425

14425번: 문자열 집합

 

풀이

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.HashSet;
import java.util.Set;
import java.util.StringTokenizer;

public class Main {
    private static final BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in));
    private static final StringBuilder stringBuilder = new StringBuilder();

    public static void main(String[] args) throws Exception {
        StringTokenizer stringTokenizer = new StringTokenizer(bufferedReader.readLine(), " ");
        int n = Integer.parseInt(stringTokenizer.nextToken());
        int m = Integer.parseInt(stringTokenizer.nextToken());

        Set<String> stringSet = new HashSet<>();

        for (int i = 0; i < n; i++) {
            stringSet.add(bufferedReader.readLine());
        }

        int count = 0;

        for (int i = 0; i < m; i++) {
            if (stringSet.contains(bufferedReader.readLine())) {
                count++;
            }
        }

        System.out.println(stringBuilder.append(count));
    }
}