def METHOD_NAME(x, y, filename):
    """
    Generate rectangle map
    :param x: x dimension of the map
    :param y: y dimension of the map
    :param filename: path to file where to write the map
    """
    f = open(filename, "w+")
    for b in range(y):
        f.write("o" * x + "\n")    
    f.close()