davecdempsey

import java.awt.List;
import java.util.ArrayList;
import java.util.Random;
import java.util.Scanner;

class Main {
  public static ArrayList<Integer> bPotentialColumn = new ArrayList<Integer>();
  public static ArrayList<Integer> iPotentialColumn = new ArrayList<Integer>();
  public static ArrayList<Integer> nPotentialColumn = new ArrayList<Integer>();
  public static ArrayList<Integer> gPotentialColumn = new ArrayList<Integer>();