client1	mall1	4
client1	mall2	41
client2	mall1	17
client2	mall2	50
client3	mall1	10
client3	mall2	42
client4	mall1	8
client4	mall2	45
client5	mall1	8
client5	mall2	38
client6	mall1	24
client6	mall2	56
client7	mall1	18
client7	mall2	52
client8	mall1	22
client8	mall2	48
client9	mall1	12
client9	mall2	41
client10	mall1	28
client10	mall2	49
client11	mall1	27
client11	mall2	49
client12	mall1	29
client12	mall2	47
client13	mall1	32
client13	mall2	5
client14	mall1	16
client14	mall2	53
client15	mall1	20
client15	mall2	42
