1488
4
64
1901
12
64
1963
6
64
6625
2
64
1302
1
64
13253
0
64
2273
0
64
1139
0
64
1580
15
64
3628
0
64
2149
2
64
1631
3
64
3063
8
64
1939
8
64
1589
0
64
895
5
63
1937
3
63
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Keyword(s): 数学