public class Eins {

    public static void main(String[] args) {
        System.out.println(calculateScore("imperative") == 9);
        System.out.println(calculateScore("no") == 2);
        System.out.println(wordScore("declarative") == 9);
        System.out.println(wordScore("yes") == 3);
    }

    public static int calculateScore(String word) {
        int score = 0;
        for (char c : word.toCharArray()) {
            if (c != 'a') {
                score++;
            }
        }
        return score;
    }

    public static int wordScore(String word) {
        return word.replace("a", "").length();
    }
}