330
0
3
278
0
3
496
0
3
408
5
2
221
0
2
492
0
2
363
0
2
445
0
2
302
0
2
311
0
2
459
0
2
372
0
2
380
2
1
333
0
1
321
3
1
171
0
1
380
0
1
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Keyword(s): 中3数学