1468
4
69
997
1
69
953
2
69
1195
0
68
1400
0
67
1055
0
66
908
0
66
1675
0
65
1103
0
65
935
2
65
995
0
64
1119
0
62
768
0
62
883
0
62
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Keyword(s): 数学