1115
0
50
1264
3
50
1333
2
50
889
0
50
1446
6
50
1544
0
50
791
0
50
1436
3
50
1734
0
49
740
0
49
1361
4
49
1168
0
49
682
9
49
569
9
49
1354
2
49
12618
5
49
806
2
49
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Keyword(s): 数学