import java.util.*;
import java.lang.*;
 
class Main
{
    public static <T> int getCost(Class<T> cl) throws Exception {
        return (int)cl.getField("cost").get(null);
    }
	public static void main (String[] args) throws java.lang.Exception
	{
    System.out.println(getCost(ClassNumber1.class));
    System.out.println(getCost(ClassNumber2.class));
	}
}
 
class ClassNumber1 {
    public static final int cost = 123;
}
class ClassNumber2 {
    public static final int cost = 321;
}

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