Java while loop not terminating!

public static void main(String args[] ) throws Exception {
    int y;
    int n;
    Scanner sc = new Scanner(System.in);
        int k = sc.nextInt();
        y = 0;
        n = 0;
        while(sc.hasNextLine()){
            String c = sc.next();
            Pattern p = Pattern.compile("[0-9]{1,2}");
            Matcher m = p.matcher(c);
            if(m.matches()){
                if(c.equals("19") || c.equals("20")){
                    y += 4;
                }
                else{
                    n += 3;
                }
            }
        }
System.out.println("Y Is: " + y + "N is : " + n);
System.out.println(y > n ? "Date" : "No Date");

}