Java I/O file made by Petr Mitrichev - 특징 : scanner가 아닌 stream을 이용하기 때문에 성능이 좋다 import java.io.*;import java.util.ArrayList;import java.util.PriorityQueue;import java.util.StringTokenizer;public class Main { public static void main(String[] args) { InputStream inputStream = System.in; OutputStream outputStream = System.out; InputReader in = new InputReader(inputStream); PrintWriter out = new Pri..