503
0
13
2534
0
13
405
0
13
2394
0
13
2307
0
13
608
0
12
476
0
12
239
0
12
530
0
12
827
0
12
9054
0
12
401
0
12
325
2
12
7634
0
12
822
0
12
696
0
12
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Keyword(s): 数学a