1013
2
54
745
0
53
2188
16
53
539
0
53
2320
12
53
1049
0
53
958
0
53
12251
0
53
1887
2
53
1630
7
53
1167
0
53
1896
4
53
744
4
53
2235
3
53
2643
21
53
1917
5
53
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Keyword(s): math