Maze a17

http://areamaze.com/m/a17

876930?20

{:rects {[0 1] {[0 2] 30}, [1 3] {[1 2] nil}, [2 3] {[2 3] 20}},
 :edges {:x {[0 2] 8, [1 3] 7}, :y {[0 2] 6, [1 3] 9}},
 :target {:type :rect, :x [1 3], :y [1 2]}}