508 无解的局面(2/2)
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ĿɿڴĿɿڴʱ֪λشˡֻİûڡ֪˷չʱͽ¶ʲôΪĹɶүҪĽô
ˣҲ⸱顣ʵղ㻹ǻһЩ˼ҿɲôôˡϾǿտƼ֮ǰǸǮչġ˵ҲǵĹ͡ҲûѪ顣˺ܹƽǿӣˣһںʵʱѻĶҵλ
˶ٺȻûдӲźϵļղŵҲӦκһʽ˳ˣұ֤δ㲻ͶʵǮȫȥֻٷ֮ʮȻܾνףôδǵͶʾ٣Ҳκγŵܱ֤ԶԶڰٷ֮ʮȻҲȫҵĻһѣҲڴţأҲϯûгŵκ飬ֻɽ˼䣬ôѡˣ
Ѿ֪˵ʲôˣڵ¶ȲߣĶͷѾð亹֮ǰļ裬оԲʱҪԵѡ˺ܶ˵ӽ˭뵽û̸䣬Ȼֶȫ(δ)
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