q[661];b;s;main(d){for(;~scanf("%d",&d);)if(getchar(q[d]=1)%4)for(s/=3;q[b]?q[b]=!printf("%s%d",&s,b),s=32:0,b=(b+66)%661;);}
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
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