920
3
7
469
0
7
352
0
7
260
0
7
322
0
7
250
0
7
504
0
7
422
2
7
350
2
7
355
0
7
466
0
7
285
0
7
292
6
7
328
2
7
448
2
7
446
0
7
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Keyword(s): Math