1283
2
28
662
4
28
664
0
28
1155
0
28
1581
4
28
1087
0
28
1160
0
28
668
0
28
1070
2
28
2008
0
28
776
13
28
778
0
28
410
2
28
248
0
28
308
0
28
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Keyword(s): math