Статичко рутирање

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Hashtable;


public class RoutingHashJava {
    public static void main (String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        int N = Integer.parseInt(br.readLine());
        Hashtable<String,ArrayList<String>> tabela=new Hashtable<>();
        for(int i=1;i<=N;i++){
            String interfejs=br.readLine();
            String values=br.readLine();
            String []val=values.split(",");
            ArrayList<String> lista=new ArrayList<>();
            for(int j=0;j<val.length;++j){
                String[] pom=val[j].split("\\.");
               // System.out.println(pom.length);
              String ip=pom[0]+"."+pom[1]+"."+pom[2];
                lista.add(ip);
            }
            tabela.put(interfejs,lista);
        }
        int M=Integer.parseInt(br.readLine());
        for(int i=1;i<=M;i++){
            String interfejs=br.readLine();
            String ip=br.readLine();
            String []pom=ip.split("\\.");
            String ipcheck=pom[0]+"."+pom[1]+"."+pom[2];
            if(tabela.containsKey(interfejs)){
                if(tabela.get(interfejs).contains(ipcheck)){
                    System.out.println("postoi");
                }
                else
                    System.out.println("ne postoi");
            }
            else{
                System.out.println("ne postoi");
            }

        }


    }
}