<?for($i=fgets(STDIN);$i>$c;$j++)$c+=$j;for($c++;$j>1;$y++){$c-=--$j;$s.=$d=$c;for($k=0;$k<$y;){$d+=++$k+$j;$s.=$d>$i?'':" $d";}$s.=" ";}echo$s;
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
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