491
0
35
496
0
35
462
1
34
652
6
33
433
0
33
464
3
33
546
2
32
351
2
32
499
1
31
518
0
30
942
0
30
566
1
29
423
0
29
310
0
28
471
0
27
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Keyword(s): 数学 公式