1255
2
43
3433
1
43
462
0
43
815
0
43
1491
4
43
788
0
43
1790
0
43
1235
5
43
2202
1
43
1151
2
43
2243
0
42
733
20
42
967
8
42
960
1
42
1271
7
42
680
4
42
979
4
42
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Keyword(s): 数学