239
0
17
631
0
17
1006
13
17
462
0
17
539
0
17
287
0
17
625
0
17
381
0
17
692
2
17
778
0
17
1054
3
17
478
0
17
812
0
17
514
0
17
692
4
17
839
0
17
891
2
17
708
1
17
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Keyword(s): math