S1=set([1,2,3,4,5,6,7,8,9,10])
S2=set([3,4,5,6,7,8,9,10,11,12])

print "S1 =", S1
print "S2 =", S2
print "Unija S1 U S2 =", S1|S2
print "Presjek S1 & S2 =", S1&S2
print "S1 razlika S2 S1\S2 =", S1-S2
print "S2 razlika S1 S2\S1 =", S2-S1
print "Simetrična razlika S1^S2 =", S1^S2
print "Unija razlika (S1\S2)U(S2\S1) =", (S1-S2)|(S2-S1)