问题描述:
1122/34=
111222/334=11112222/3334=
······
(2000个1)111···1(2000个2)222···2/(1999个3)34=
111222/334=11112222/3334=
······
(2000个1)111···1(2000个2)222···2/(1999个3)34=
问题解答:
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