print "0".to_hex
print "1".to_hex
print "a".to_hex
print "A".to_hex
print "F".to_hex
print "A00".to_hex
print "0100".to_hex
print "ABC".to_hex

print 0.to_hex
print 1.to_hex
print 10.to_hex
print 16.to_hex
print 2560.to_hex
print 256.to_hex
print 2748.to_hex