1062
0
20
573
0
20
791
26
20
613
0
20
560
2
19
624
0
19
327
0
19
402
0
19
496
6
19
432
0
18
917
0
18
1199
12
18
400
2
17
450
0
17
851
7
17
246
0
17
531
0
17
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Keyword(s): #math