๋ฌธ์ (์ถ์ฒ: https://www.acmicpc.net/problem/4775) ๋ฌธ์ ํ์ด HashSet์ ๋จ์ด๋ฅผ ์ ์ฅํ๊ณ ์ ์ฅ๋ ๋จ์ด๊ฐ ์๋๋ผ๋ฉด ์ถ๋ ฅํ๋ค. my solution (Java)import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.IOException;import java.io.InputStreamReader;import java.io.OutputStreamWriter;import java.util.ArrayList;import java.util.HashSet;import java.util.Set;public class _4775_ { // Spelling Be public static void main(St..
