1753
12
30
598
0
30
336
0
30
511
0
29
533
0
25
217
0
24
350
1
23
423
0
23
646
16
23
628
0
22
538
2
22
688
0
22
429
0
21
452
0
21
416
1
21
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Keyword(s): 不等式