client1	mall1	11
client1	mall2	36
client2	mall1	30
client2	mall2	45
client3	mall1	30
client3	mall2	45
client4	mall1	50
client4	mall2	25
client5	mall1	38
client5	mall2	2
client6	mall1	19
client6	mall2	39
client7	mall1	27
client7	mall2	41
client8	mall1	27
client8	mall2	35
client9	mall1	19
client9	mall2	46
client10	mall1	33
client10	mall2	29
client11	mall1	17
client11	mall2	37
client12	mall1	30
client12	mall2	29
client13	mall1	37
client13	mall2	53
client14	mall1	5
client14	mall2	35
client15	mall1	27
client15	mall2	56
