# swap num

a = 10
b = 20

temp = a
a = b
b = temp

print(a)
print(b)

a = 10
b = 20

a = a + b
b = a - b
a = a - b

print(a)
print(b)


a = 10
b = 20

a = a ^ b
b = a ^ b
a = a ^ b

print(a)
print(b)


a = 10
b = 20

a, b = b,a
print(a)
print(b)

