University of Houston math contests

[telemachos]

I think this makes the best use of the HP-50g's capabilities:

Input:

{ [–6.94 –1.2] [–5.16 3.84] [3.4 2.18] [2.46 –6.72] }

Program (56.5 bytes):

<< DUP HEAD + << CROSS >> DOSUBS ΣLIST ABS 2 / >>

Output: 67.473