620
0
20
1101
0
20
616
4
20
683
0
20
523
2
20
694
0
20
1029
0
20
616
0
20
960
4
20
682
1
20
2845
7
20
1173
0
20
1096
1
20
753
0
20
915
2
20
543
0
20
1079
28
20
671
0
20
529
1
20
688
2
20
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Keyword(s): Math