x = 1
y = 2
z = 3

def mystery1(a, z):
    s = 1000
    print("Mystery1 s: " + str(s))
    print("Mystery1 x: " + str(x))
    print("Mystery1 y: " + str(y))
    print("Mystery1 z: " + str(z))
    z = 100

def mystery2():
    print("Mystery2 a: " + str(a))


mystery1(10, 20)

print("x is: " + str(x))
print("y is: " + str(y))
print("z is: " + str(z))

mystery2()