514
0
9
386
0
8
428
0
8
722
0
8
1221
0
8
1268
0
8
1082
0
8
1479
0
7
522
0
7
907
0
7
767
0
7
461
0
7
171
0
6
350
0
6
327
0
6
747
0
6
375
0
6
399
0
6
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Keyword(s): 数学c