public static int designerPdfViewer(List<Integer> h, String word) {
    char start = 'a';
    int end = start+26;
    Map<Character, Integer> map = new LinkedHashMap<>();
    for(int i=start, j=0; i<=end && j<h.size(); i++, j++) {
        map.put((char)i, h.get(j));
    }
    int maxHeight = Arrays.stream(word.split("")).mapToInt(s -> {
        Character c = s.charAt(0);
        return map.get(c);
    }).max().orElse(0);
    return maxHeight * word.length();
}