n,s,v,d;main(){for(;n<2e3;printf(v<2?"%d\n":"",n))for(v=++n;v>4;v=s)for(s=0;v;d=v%10,s+=d*d,v/=10);}
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
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