2120
2
55
1787
17
52
293
0
51
4864
0
51
1584
3
50
1124
4
50
11973
0
49
889
2
47
2296
0
47
2284
0
47
1707
5
43
464
0
43
442
0
43
1795
10
43
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Keyword(s): 数学A