139
0
9
294
0
9
372
1
9
355
0
9
237
1
9
576
2
8
434
0
8
257
3
8
533
0
8
777
1
7
285
2
7
311
1
7
312
0
7
662
4
7
411
0
7
303
0
7
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Keyword(s): 自然数