import java.util.*;
import java.lang.*;
import java.io.*;

 class Decrementer {
    private void decrement(String x) {
        x = x + "abc";
    }
    public static void main(String[] args) {
        String x = "xyz";
        Decrementer decrementer = new Decrementer();
        decrementer.decrement(x);
        System.out.println(x);
    }
}