import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Scanner;

public class C0163_Intermediate {

    private static int difficulty = getDifficulty();
    private static String[] words = getWordList();
    private static int wordLength = getWordLength(difficulty);
    private static String[] selectedWords = new String[(int)(Math.random()*wordLength)+1];
    private static String answer;
    private static final int ATTEMPTS = 4;

    public static void main(String[] args) {
        getWordSelection();
        answer = selectedWords[(int)(Math.random()*(selectedWords.length))];
        play();
    }

    private static void play(){
        for(int i = 0; i < ATTEMPTS; i++){
            String input = "";
            boolean b = false;
            while(!b){
                System.out.print("Guess (" + (ATTEMPTS-i) + " left): ");
                input = new Scanner(System.in).next().toUpperCase();
                if(arrayContainsWord(selectedWords, input)) b = true;
                else System.out.println("Try again. That word is not valid.");
            }
            if(input.equals(answer)){
                System.out.println("You win! " + wordLength + "/" + wordLength + " guessed!");
                return;
            } else{
                int count = 0;
                for(int j = 0; j < selectedWords.length; j++){
                    if(input.charAt(j) == answer.charAt(j)) count++;
                }
                System.out.println(count + "/" + wordLength + " correct");
            }
        }
    }

    private static boolean arrayContainsWord(String[] array, String word){
        for(int i = 0; i < array.length; i++){
            if(array[i] == null)    return false;
            if(array[i].equals(word))   return true;
        }
        return false;
    }

    private static void getWordSelection(){
        for(int i = 0; i < selectedWords.length; i++){
            for(int j = (int)(Math.random()*words.length); j < words.length; j++){
                if(words[j].length() == wordLength && !arrayContainsWord(selectedWords, words[j])){
                    selectedWords[i] = words[j].toUpperCase();
                    System.out.println(selectedWords[i]);
                    break;
                }
            }
        }
    }

    private static int getDifficulty(){
        boolean correct = false;
        int diff = 0;
        while(!correct){
            try{
                System.out.print("Difficulty (1-5): ");
                diff = Integer.parseInt(new Scanner(System.in).next());
                if(diff <= 5 && diff >= 1)  correct = true;
            } catch(Exception e){
                correct = false;
            }
        }
        return diff;
    }

    private static String[] getWordList(){
        File file = new File("Wordlist.txt");
        ArrayList<String> t = new ArrayList<String>();
        try{
            BufferedReader buffRead = new BufferedReader(new FileReader(file));
            String line = buffRead.readLine();
            while(line != null){
                t.add(line);
                line = buffRead.readLine();
            }
            buffRead.close();
        } catch(IOException e){
            e.printStackTrace();
        }
        return t.toArray(new String[t.size()]);
    }

    private static int getWordLength(int difficulty){
        if(difficulty == 1) return 4;
        if(difficulty == 2) return (int)(Math.random()*4)+4;
        if(difficulty == 3) return (int)(Math.random()*4)+7;
        if(difficulty == 4) return (int)(Math.random()*4)+9;
        if(difficulty == 5) return (int)(Math.random()*4)+12;
        else return 7;
    }

}