import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.Scanner;


public class Login {
	private String input(String x) throws IOException{
		System.out.print(x);
		return new Scanner(System.in).nextLine();
	}

	public Login(String filename) throws IOException{
		for(int w = 0; w<3;w++){
			String username = input("username: ");
	        String password = input("password: ");
	        String both = "";
	        try{
		        Scanner t = new Scanner(new File(filename));
		        while(t.hasNextLine()){
		        	both += t.nextLine()+" ";
		        }
		        t.close();
	        }catch (ArrayIndexOutOfBoundsException e){

	        }
	        String Both[] = both.split(" ");
	        int t = 0;
	        for(int i = 0; i < Both.length; i += 2){
	        	if(Both[i].equals(username) && Both[i+1].equals(password) ){
	                System.out.println("SUCCESSFUL, YOU ARE LOGGED IN!");
	                System.exit(0);
	                break;
	            }
	        	if(!(Both[i].equals(username) || Both[i+1].equals(password))){
	        		t+=1;
	        		if(t == 2 && w != 2){
	        			System.out.println("USERNAME OR PASSWORD INCORRECT! TRY AGAIN");
	        			continue;
	        		}
	        	}
	        }
	        if(w == 2){
				System.out.println("YOU HAVE TRIED TOO MANY TIMES!");
				break;
			}
	    }
	}
}