import random
random.seed(42)
sim=10000
win=0
for i in range(sim):
    x1=random.randint(1,8)
    y1=random.randint(1,8)
    x2 = random.randint(1, 8)
    y2 = random.randint(1, 8)
    x3=random.randint(1,8)
    y3=random.randint(1,8)
    if x1!=x2 and x1!=x3 and x2!=x3 and y1!=y2 and y1!=y3 and y2!=y3:
        win+=1
print(win/sim)