983
20
41
1182
1
41
1643
1
41
2117
10
41
1549
0
41
1127
0
41
966
7
41
771
0
41
902
0
41
1143
0
41
876
0
41
1820
0
41
992
6
41
511
1
41
2339
0
41
841
8
41
1758
0
41
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Keyword(s): math