668
0
20
712
0
14
291
0
12
452
0
11
473
0
11
1209
0
10
710
0
8
376
0
8
457
0
8
476
0
7
366
0
7
338
2
7
427
0
7
333
0
7
889
0
7
364
0
7
437
0
7
473
0
7
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Keyword(s): 代数