856
0
20
645
18
20
539
2
20
620
2
20
378
2
20
679
3
20
675
3
20
557
0
20
725
2
20
733
0
20
1187
2
20
427
0
20
242
0
20
1237
1
20
844
6
20
608
0
20
698
1
20
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Keyword(s): Math