1998
16
53
481
0
53
2154
12
53
1013
0
53
948
0
53
12108
0
53
1512
7
53
1765
5
53
1115
0
53
1777
4
53
734
4
53
2159
3
53
2487
21
53
1861
5
53
1389
6
53
2145
2
53
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Keyword(s): math