class Main{ public static void main(String[] args){ System.out.println(new Main().getNums(13246)); } public int getNums(int a){ int first = 1, second = first; char[] chars = String.valueOf(a).toCharArray(); for(int i = 0; i < chars.length; i++){ if (i != 0 && (chars[i-1]-'0' <3) && (chars[i]) - '0' < 7){ int tmp = second; second += first; first = tmp; }else{ first = second; } } return second; } }