๋ฌธ์ (์ถ์ฒ: https://www.acmicpc.net/problem/8975) ๋ฌธ์ ํ์ด HashSet์ ์ฌ์ฉํ์ฌ ๊ฐ์ฌ๊ฐ ์ฃผ์ด์ก์ ๋ ์ ๋ชฉ์ ๋จ์ด๋ฅผ ๋ช ๊ฐ ์ฌ์ฉํ๋์ง ํ์ธํ๋ค. my solution (Java)import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.util.HashSet;public class _8975_ { // PJESMA public static void main(String[] args) throws IOException { BufferedReader bf = new BufferedReader(new InputStreamReader(System.in)..
