#3.13
import random
from random import randint
import matplotlib
import matplotlib.pyplot as plt

N=10000
a,b,aa,bb,aaa,bbb=[],[],[],[],[],[]
n,m,z = 0,0,0
for i in range (N):
    x=random.uniform(100, 1000)
    y=random.uniform(100, x)
    if (1000-y)<(x-100):
        n+=1
        a.append(x)
        b.append(y)
    if (x-y)<450:
        m+=1
        aa.append(x)
        bb.append(y)
    if (x-y)<(1000-x):
        z+=1
        aaa.append(x)
        bbb.append(y)
print(n/N, m/N, z/N)

xmin, xmax, ymin, ymax = plt.axis([0, 1000, 0, 1000])
plt.plot(a,b, linestyle="",marker="o")
plt.title('PLOT')
plt.show()
xmin, xmax, ymin, ymax = plt.axis([0, 1000, 0, 1000])
plt.plot(aa,bb, linestyle="",marker="o")
plt.title('PLOT')
plt.show()
xmin, xmax, ymin, ymax = plt.axis([0, 1000, 0, 1000])
plt.plot(aaa,bbb, linestyle="",marker="o")
plt.title('PLOT')
plt.show()