+

=

1

1

–

=

+

=

1

1

–

=

+

=

1

1

–

=

+

=

1

1

–

=

+

=

1

1

–

=

Squirrel covered

=

of the route.

Still have to go

=

of the route.

of 400 m =

m.

Squirrel still have to go m.