class Main {
    public static void main(String[] args) {
        float x = 1.0f;
        float y = 1e-8f;
        float z = x + y;
        
        System.out.printf("%g\n", x);
        System.out.printf("%g\n", y);
        System.out.printf("%g\n", z);
        System.out.printf("%g\n", z - x);
    
    }
}