421
3
58
1165
2
58
802
10
58
1154
12
58
1052
4
58
1961
0
58
851
8
57
1975
4
57
3211
0
57
749
2
57
836
8
57
1117
0
57
1865
6
57
616
10
57
815
0
57
1978
0
57
1341
5
57
578
5
57
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Keyword(s): 数学