public class Location
{
    private int theRow;
    private int theCol;
    
    public Location(int r, int c)
    {
        theRow = r;
        theCol = c;
    }
    
    public int getRow()
    {
        return theRow;
    }
    
    public int getCol()
    {
        return theCol;
    }
    
    public boolean equals(Object other)
    {
        if(this == other)
            return true;
        
        if( ! (other instanceof Location) )
            return false;
        
        Location otherLoc = (Location) other;
        return theRow == otherLoc.theRow && theCol == otherLoc.theCol;
    }
    
    public String toString()
    {
        return "r: " + theRow + ", c: " + theCol;
    }
    
    public int hashCode()
    {
        return theRow * 31 + theCol * 37;
    }
}