def draw_plots(P, m, n, x, y, sample):
    def draw_plot(plot, x, values1, values2):
        x_plot = plt.subplot(111)
        x_plot.bar([x_i - 0.2 for x_i in x], values1, width=0.2, color='green', fill=True)
        x_plot.bar(x, values2, width=0.2, color='red', fill=True)

    Px = [sum(P_j) for P_j in P]
    Py = [sum([P[i][j] for i in range(m)]) for j in range(n)]

    Px_sample = [0] * m
    Py_sample = [0] * n

    x_sample = sorted([z[0] for z in sample])
    for i in range(m):
        Px_sample[i] = x_sample.count(x[i]) / len(x_sample)

    y_sample = sorted([z[1] for z in sample])
    for i in range(n):
        Py_sample[i] = y_sample.count(y[i]) / len(y_sample)

    plt.figure(1)
    draw_plot(plt, x, Px, Px_sample)
    plt.figure(2)
    draw_plot(plt, y, Py, Py_sample)
    plt.show()