print 1 & 1 #1
print 1 & 0 #0
print 0 & 0 #0
print 0 & 1 #0

print 5 & 6  # gives 4
# At the bit level:
#     0101  (5)
#   & 0110  (6)
#   = 0100  (4)


1311993164a36985d13d068086e5601307857f19
print 1 & 1 #1
print 1 & 0 #0
print 0 & 0 #0
print 0 & 1 #0

print 5 & 6  # gives 4
# At the bit level:
#     0101  (5)
#   & 0110  (6)
#   = 0100  (4)

