2853
0
72
1815
1
72
1440
2
71
6964
0
71
1795
0
71
4654
0
71
1159
1
71
20262
0
71
1764
0
70
1687
1
70
2685
0
70
1760
1
70
2935
0
70
2992
0
70
1599
9
70
2167
0
70
4471
0
69
2394
0
69
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Keyword(s): 数学