The ornamental design for a golfcup and flagstick, as shown and described.
FIG. 1 is a perspective view of a golf cup and flag stick according to the present invention;
FIG. 2 is a side view of a golf cup and flag stick according to the present invention;
FIG. 3 is a top view of a golf cup and flag stick according to the present invention; and,
FIG. 4 is a bottom view of a golf cup and flag stick according to the present invention.
The broken lines in the drawings represent the boundaries of the claimed design and unclaimed environmental subject matter. The broken lines form no part of the claimed design.