376
5
21
538
0
21
1223
0
21
732
1
21
793
2
21
450
0
21
1722
0
21
831
0
21
1605
16
21
1056
20
21
915
6
21
499
0
21
545
0
21
1118
0
21
552
2
21
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Keyword(s): Math