a[40001],b[9],i,*j;main(d){for(;gets(b);j[j[2]?!j[1]&1:2]=strdup(b))j=a+atoi(rindex(b,32))*3;for(d=4e4;--d;)a[d]&&printf("%d %s\n",++i-2+d%3,a[d]);}
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
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