1576
0
51
1543
6
51
2208
24
51
687
9
51
902
2
51
878
0
50
917
0
50
1560
4
50
728
3
50
396
0
50
1918
9
50
2668
5
50
1854
3
50
983
0
50
2105
7
50
2222
2
50
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Keyword(s): math