2121
0
73
5718
0
73
764
7
72
1581
0
72
1871
2
72
2078
0
72
3906
1
72
1869
4
72
3559
8
72
844
3
72
1899
3
72
18640
5
71
2494
0
71
1190
2
71
567
2
71
3228
13
71
1560
0
71
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Keyword(s): math