碰运气的约会-几何概率

  |x-y|<=10,0<=x<=60,0<=y<=60

import matplotlib.pyplot as plt
import numpy as np

x = np.linspace(0,60,60)

y1 = [min(max(xi-10,0),60) for xi in x]
y2 = [min(max(xi+10,0),60) for xi in x]
plt.figure(figsize=(6,6))
plt.plot(x,y1)
plt.plot(x,y2)
plt.fill_between(x,0,60,color='r',alpha=1)
plt.fill_between(x,y1,y2,color='g',alpha=1)

plt.show()