452
0
15
792
0
15
1168
7
15
618
2
15
873
0
15
422
0
15
315
3
15
754
1
15
1115
0
15
506
0
15
160
0
15
1096
1
15
898
2
15
417
0
15
560
0
15
506
0
15
487
3
15
860
12
15
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Keyword(s): math