The files containing the DPRPP-IC instances have the following format:

NAME: <name of the instance>
COMMENTS: <comment>
VERTICES: <number of vertices>
PRIZE_ARCS: <number of arcs with profits>
OTHER_ARCS: <number of arcs without profit>
EDGES: <number of edges representing incompatibilities>
REM_EDGES : <number of edges representing weak incompatibilities>
PRIZE_ARCS_LIST :
(<u1>,<u2>) cost <c> prize <p>
.
.
.
OTHER_ARCS_LIST :
(<u1>,<u2>) cost <c>
.
.
.
EDGES_LIST :
(<u1>,<u2>)
.
.
.
REM_EDGES_LIST : 
(<u1>,<u2>) cost <c>
.
.
.

Entries <name of instance> and <comment> may be empty.
For each required arc from node <u1> to node <u2> there is a line 

	(<u1>,<u2>) cost <c> prize <p>

where <c> is the cost of traversing the arc and <p> is the prize obtained from servicing it. 

For the arcs with no profit from node <u1> to node <u2> there is a line 

	(<u1>,<u2>) cost <c>

where <c> is the cost of traversing the arc.

The list of edges representing incompatibilities is given after "EDGES_LIST :".

The list of edges representing weak incompatibilities is given after "REM_EDGES_LIST :", 
where the cost <c> is the penalty paid to remove the incompatibility