720
4
49
866
8
48
1748
0
48
1386
2
47
2021
1
47
1211
0
47
1724
0
47
1230
1
47
896
12
46
1214
2
46
874
0
46
1310
6
46
832
2
46
1169
0
46
862
0
46
487
16
45
1922
0
45
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Keyword(s): 中3 数学