2473
3
83
5132
3
82
7936
19
82
2192
0
82
1192
4
82
3328
8
82
2569
8
82
1736
23
81
1476
16
81
21168
5
81
1967
5
81
3005
8
81
3964
19
80
2277
3
80
2138
14
80
2404
9
80
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Keyword(s): 数学