백준 17219번(Java)

import java.io.*;
import java.util.*;

public class Main {

	public static void main(String[] args) throws IOException {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		
		String[] input = br.readLine().split(" ");
		
		int N = Integer.parseInt(input[0]);
		int M = Integer.parseInt(input[1]);
		
		Map<String, String> map = new HashMap<>();
		for(int i=0; i<N; i++) {
			input = br.readLine().split(" ");
			map.put(input[0], input[1]);
		}
		
		StringBuilder sb = new StringBuilder();
		for(int i=0; i<M; i++) {
			sb.append(map.get(br.readLine())).append('\n');
		}
		
		System.out.println(sb.toString());
	}
}