private static String createNumericString(long startNumber, int lenght) {
    String numeric = "";
    long current = startNumber;
    while(numeric.length() < lenght) {
        numeric = numeric.concat(String.valueOf(current));
        current += 1;
    }
    return numeric;
}
    
public static void separateNumbers(String s) {
    //Maximum numbers of the first integer
    int maximum = (int)Math.round(s.length()/2);
    for(int lenght = 1; lenght <= maximum; lenght++) {
        //Pick the first number
        long first = Long.valueOf(s.substring(0, lenght));
        //Perform checking a[i] - a[i - 1] = 1
        String numeric = createNumericString(first, s.length());
        if(numeric.equals(s)) {
            System.out.println("YES " + first);
            return;
        }
    }
    System.out.println("NO");
}