656
0
47
1221
3
45
1222
0
43
367
0
43
842
0
41
374
0
39
1011
2
37
488
0
34
604
2
32
780
0
32
1237
1
31
1039
0
30
582
0
29
546
1
28
686
0
27
835
0
25
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Keyword(s): 微分