# Four of Diamonds: Building 38-3 Solution

### Author: Adam Suhl Poem: Anand Sarwate

The picture depicts a floorplan of the Building 38 Athena cluster, with a lettered box in the location of each computer. In the arithmetic expressions, substitute the last digits of the computer's host name for the corresponding letter. (Each computer's hostname is conveniently printed on a label stuck to the computer or seen on the login screen.) Evaluating the arithmetic expressions yields values between 1 and 26; mapping them to letters gives the answer, GREAT DOME.

 Letter Last Digits of Hostname A B C D E F G H I J K L M N O P Q R S T 3 4 20 8 7 6 5 1 19 9 10 11 12 2 18 17 16 15 14 13

 H + (A * C / K) 1 + (3 * 20 / 10) 7 G M + I - T 12 + 19 - 13 18 R I + A - P 19 + 3 - 17 5 E G - I + R 5 - 19 + 15 1 A E + E + C - S 7 + 7 + 20 - 14 20 T ((C + O) / I) + N ((20 + 18) / 19) + 2 4 D -(T - E) + C + H -(13 - 7) + 20 + 1 15 O ((I - H - T) * F) - P ((19 - 1 - 13) * 6) - 17 13 M (B - L + D) * G (4 - 11 + 8) * 5 5 E