/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		Character player = new Player();
		player.doSomething(1, 2, 3);
	}
}
 
abstract class Character {
	abstract void doSomething(int[] x);
}
class Player extends Character {
	@Override
	void doSomething(int[] x) {
		System.out.println("Doing something");
	}
}

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