IBAN

import java.util.Scanner;

public class IbanBerechnen {

    public static String erzeugeIban(String laenderkennung, String blz, String nummer) {
        // normalize country code
        laenderkennung = laenderkennung.toUpperCase();

        // normalize nummer
        if(nummer.length() < 10) {
            int diff = 10 - nummer.length();
            final StringBuilder builder = new StringBuilder(10);
            builder.append(nummer);
            for(; diff > 0; diff--) {
                builder.insert(0, '0');
            }
            nummer = builder.toString();
        }
        assert nummer.length() == 10;

        // assemble BBAN
        final String bban = blz + nummer;
        assert bban.length() == 18;

        // compute pruefzahl
        final String pruefzahl;
        {
            // compute country code digits
            final String countryCodeDigits;
            {
                final int offset = -'A' + 10;
                assert laenderkennung.length() == 2;
                countryCodeDigits =
                    String.valueOf(laenderkennung.charAt(0) + offset) +
                    String.valueOf(laenderkennung.charAt(1) + offset);
            }

            // calculate pruefzahl % 97
            int mod97 = -1;
            String remaining = bban + countryCodeDigits + "00";
            while(remaining.length() > 2) {
                mod97 = Integer.parseInt(remaining.substring(0, Math.min(9, remaining.length()))) % 97;
                remaining = String.valueOf(mod97) + remaining.substring(Math.min(9, remaining.length()));
            }
            assert mod97 != -1;

            // calculate pruefzahl
            final int num = 98 - mod97;
            pruefzahl = num < 10 ? "0" + String.valueOf(num) : String.valueOf(num);
        }
        assert pruefzahl.length() == 2;

        return laenderkennung + pruefzahl + bban;
    }

    public static void main(String[] args) {
        final Scanner sc = new Scanner(System.in);
        System.out.println(erzeugeIban(sc.next(), sc.next(), sc.next()));
        sc.close();
    }

}