Holt: 135@holt, 277@holt, 135@1, 277@2
O'Connell: 200@oconnell, North Entrance@11, South Entrance@11
Plumas: 100@plumas, Entrance 1@21
Building names: holt, oconnell / oc, plumas  |  Floor numbers: @1–@3 (Holt), @11–@14 (O'Connell), @21–@23 (Plumas)
Optimized version: A* solves first, then animates the final route.