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)
    x = -1

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)
print "s is: " + str(s)

mystery2()