1809
12
30
635
0
30
388
0
30
579
0
29
606
0
25
249
0
24
389
1
23
459
0
23
777
16
23
680
0
22
584
2
22
737
0
22
493
0
21
489
0
21
494
1
21
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Keyword(s): 不等式