97.08.28:
1217
~()
96
1. (96%)(58%)(25%) (21%) (18%)
2.
3.
4.
k1.,2.3.4.5.6.
3
973
1. 2. 3.: (1)(k) (2) 4.5.6.
1. 2. 3. 4.5. 6. 7.
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