시간&메모리 제한 문제 입력&출력 문제풀이 package com.Back; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.util.Deque; import java.util.LinkedList; public class Back_5430 { public static void main(String[] args) throws NumberFormatException, IOException { BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); StringBuilder sb = new Strin..