client1	mall1	4
client2	mall1	17
client3	mall1	10
client4	mall1	8
client5	mall1	8
client6	mall1	24
client7	mall1	18
client8	mall1	22
client9	mall1	12
client10	mall1	28
client11	mall1	27
client12	mall1	29
client13	mall1	32
client14	mall1	16
client15	mall1	20
client16	mall1	24
client17	mall1	26
client18	mall1	26
client19	mall1	21
