public class Prog12 {
    public static void main(String[] args) {
        int i = 0;
        for (int k = 0; k <= 128 ; k++) {
            i = k*k + 17;
        }
        System.out.println(" i : " + i);
        String str = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
        StringBuffer buffer = new StringBuffer();
        for (int k = 0;k<str.length()/3;k++) {
            buffer.append(str.substring(k+2,k+3));
        }
        System.out.println("Resultat : " + buffer.length());
    }
}