1. 문제 2. 코드import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.util.StringTokenizer;import java.io.BufferedWriter;import java.io.OutputStreamWriter;import java.lang.StringBuilder;import java.util.HashMap;public class Main{ private BufferedReader br; private StringTokenizer st; private StringBuilder sb; private void start() throws ..
