Not a question to attack in a simplistic way.
Depends on things like ...
(a) the aircraft AFM data,
(b) how you want to handle the first segment gradient and distance,
(c) which case is limiting at a given Hp and OAT,
(d) what the obstruction profile is like for the particular runway,
(e) the extent to which the AFM permits unbalancing
.. and, at the end of the day, the sums just give us an idea of what the aircraft might do in a repeatable world - which doesn't always have a great deal to do with the real one in which we do battle ... not the least of which is represented by roller coaster runways.
ICAO does have a recommendation to weight the varying slopes somewhat but, at the end of the day, there still remains a bit of art in the science, especially if an operator wants to factor in some corporate risk assessment rather than just screwing the AFM sums for the maximum weight without any consideration for real world conditions ...
However .. it is good fun to play with ..