import M5a._

val urban_bench = 
""">+[<+++++++++++++>-]<[[>+>+<<-]>[<+>-]++++++++
   [>++++++++<-]>.[-]<<>++++++++++[>++++++++++[>++
   ++++++++[>++++++++++[>++++++++++[>++++++++++[>+
   +++++++++[-]<-]<-]<-]<-]<-]<-]<-]++++++++++."""

assert(run(urban_bench, Map()) == 
  Map(0 -> 10, 5 -> 0, 1 -> 0, 6 -> 0, 2 -> 0, 7 -> 0, 3 -> 0, 4 -> 0))