827
2
43
1808
26
43
1576
0
43
614
0
43
1492
17
43
872
2
43
1600
3
43
1152
0
43
973
5
43
2069
0
43
1412
0
43
624
0
43
1455
0
43
1068
0
43
443
0
43
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Keyword(s): 数学