738
0
33
744
0
32
811
3
32
815
8
32
743
4
31
2067
61
30
789
0
30
921
4
30
528
4
30
519
1
30
2552
15
30
865
2
29
352
2
28
2391
17
28
879
4
27
366
0
27
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Keyword(s): mathematics