G0. Roadworks (all roads ready)
Easy version of G. Roadworks. All roads exist from day $1$; you only choose where to walk on a path. Solve G0 first, then read how opening days generalize in the full problem.
Easy version of G. Roadworks. All roads exist from day $1$; you only choose where to walk on a path. Solve G0 first, then read how opening days generalize in the full problem.