421
3
28
561
0
28
545
2
28
648
0
28
636
1
28
1261
5
28
1161
1
28
2235
17
28
1348
31
28
601
0
28
1199
2
28
3398
43
28
307
0
28
442
1
28
762
2
28
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Keyword(s): Math