client1	mall1	18
client2	mall1	33
client3	mall1	15
client4	mall1	27
client5	mall1	40
client6	mall1	44
client7	mall1	11
client8	mall1	1
client9	mall1	37
client10	mall1	16
client11	mall1	28
client12	mall1	25
client13	mall1	17
client14	mall1	36
client15	mall1	37
client16	mall1	5
client17	mall1	21
client18	mall1	6
client19	mall1	30
client20	mall1	36
