1389번: 케빈 베이컨의 6단계 법칙https://www.acmicpc.net/problem/1389 # 코드import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.IOException;import java.io.InputStreamReader;import java.io.OutputStreamWriter;import java.util.StringTokenizer; public class Main { static final int INF = 987654321; public static void main(String[] args) throws NumberFormatException, IOException { ..