532
0
14
557
0
14
822
0
14
418
0
14
421
0
14
819
3
14
498
2
13
338
0
13
1924
0
13
416
0
13
956
3
13
674
0
13
612
0
13
591
0
13
612
0
13
993
0
13
827
0
12
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Keyword(s): 2次方程式