client1	mall1	41
client2	mall1	24
client3	mall1	29
client4	mall1	38
client5	mall1	16
client6	mall1	18
client7	mall1	31
client8	mall1	17
client9	mall1	16
client10	mall1	27
client11	mall1	25
client12	mall1	34
client13	mall1	24
client14	mall1	23
client15	mall1	8
client16	mall1	30
client17	mall1	21
client18	mall1	32
client19	mall1	24
client20	mall1	29
