import numpy as np

def get_values():
    x = np.arange(-15, 10)
    y = np.empty(30)
    start = np.random.randint(10, 85)
    y[0] = start

    i = 0

    while i < 25:
        if i > 1 and y[i-2] < y[i-1]:
            if np.random.rand() < 0.2:
                y[i + 1] = y[i]
                i = i+1
                continue
            elif np.random.rand() < 0.1:
                y[i + 1] = y[i]
                y[i + 2] = y[i]
                y[i + 3] = y[i]
                i = i+3

        if y[i] >= 100:
            y[i] = np.random.randint(82, 98)
        curr = y[i]
        i += 1
        if curr < np.random.randint(15, 30):
            if np.random.rand() < 0.1:
                y[i] = curr - np.random.randint(4, 6)
            else:
                while y[i] < np.random.randint(70, 98):
                    y[i] = y[i - 1] + np.random.randint(25, 35)
                    if i > 25:
                        break
                    if y[i] > 95:
                        y[i] = np.random.randint(82, 98)
                        i -= 1
                        continue
                    i += 1

        else:
            y[i] = curr - np.random.randint(3, 10)

    if y[i] >= 100:
        y[i] = np.random.randint(82, 98)

    return x.tolist(), y.tolist()[:25]

def get_data():
    x, y = get_values()
    return [[i, y if i <= 0 else None, y if i >= 0 else None] for x, y, i in zip(x, y, range(-15,11))]