422
2
10
584
0
9
374
1
9
342
0
9
453
2
9
449
0
9
489
0
9
871
0
9
289
7
9
227
0
9
7109
0
9
745
0
9
1149
0
8
320
2
8
466
2
8
1284
0
8
913
0
8
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Keyword(s): 数学 要点