1221
2
47
379
0
47
1573
6
47
1564
4
47
622
2
47
1386
2
47
151
0
47
1003
0
47
914
0
47
1309
2
47
414
4
47
1782
0
47
1597
3
47
1215
0
47
2442
4
47
1861
0
47
1202
14
47
2398
0
47
782
0
47
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Keyword(s): 数学