import matplotlib.pyplot as plt
data = [10, 20, 20, 30, 40, 30, 50, 60, 40, 50]
categories = ["A", "B", "C", "D"]
values = [30, 20, 40, 10]
plt.subplot(1, 2, 1)
plt.hist(data, bins=5 , edgecolor='black')
plt.title("Histogram")
plt.subplot(1, 2, 2)
plt.pie(values, labels=categories, autopct='%1.2f%%', colors=['r', 'g', 'b', 'y'])
plt.title("Pie Chart")
plt.show()