1189
0
30
666
2
30
1079
0
30
1148
2
30
139
0
30
151
0
30
1469
0
30
986
2
30
945
14
30
1224
2
29
1259
0
29
1161
0
29
1718
2
29
639
0
29
1627
0
29
654
0
29
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Keyword(s): 数学 問題