1813
12
30
637
0
30
388
0
30
582
0
29
607
0
25
249
0
24
394
1
23
460
0
23
781
16
23
680
0
22
585
2
22
737
0
22
497
0
21
492
0
21
496
1
21
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Keyword(s): 不等式