577
4
14
386
0
14
646
0
14
613
0
14
799
0
14
549
0
14
413
0
14
2106
0
14
557
0
14
723
0
14
1009
0
14
1569
0
14
3159
2
14
531
0
14
1285
0
14
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Keyword(s): 数学i a