import matplotlib.pyplot as plt
import numpy as np
n_person = 2000
n_times = 500
t = np.arange(n_times)
steps = 2 * np.random.randint(2, size
import matplotlib.pyplot as plt
import numpy as np
n_person = 2000
n_times = 500
t = np.arange(n_times)
steps = 2 * np.random.randint(2, size