import random
mylist = ["2", "6", "7", "9"]
x1 = random.choices(mylist)
x2 = random.choices(mylist)
x3 = random.choices(mylist)
x4 = random.choices(mylist)
y1 = int(x1[0])
y2 = int(x2[0])
y3 = int(x3[0])
y4 = int(x4[0])
y = y1 * 1000 + y2 * 100 + y3 * 10 + y4
print(y)