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什么数据结构都不用，直接输出就好了。附小代码

Posted by Eov_Second at 2016-12-06 18:12:26 on Problem 2013 
main(){char s[16][32];int n,i,t=0;while(scanf("%d",&n)&&n){for(i=0;i<n;i++)scanf("%s",s[i]);printf("SET %d\n",++t);for(i=0;i<n;i+=2)puts(s[i]);for(i=(n|1)-2;i>0;i-=2)puts(s[i]);}}
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