board 4 4 num_steps 4 num_robots 4 robot A start 2 0 north goal 2 1 do_nothing forward_1 404 do_nothing do_nothing robot B start 0 1 east goal 1 1 forward_2 303 do_nothing do_nothing do_nothing robot C start 1 3 south goal 1 2 do_nothing do_nothing do_nothing forward_1 202 robot D start 3 2 west goal 2 2 do_nothing do_nothing forward_1 101 do_nothing