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Scheduler: prioritize later matches to maximize gap between team activities #2102

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Scheduler: prioritize later matches to maximize gap between team activities #2102

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Copilot Apr 22, 2026
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Scheduler: process available matches in reverse order to maximize act…
Copilot Apr 22, 2026
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11 changes: 9 additions & 2 deletions apps/scheduler/src/services/scheduler_service.py
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Original file line number Diff line number Diff line change
Expand Up @@ -110,7 +110,11 @@ def _make_matches(self):
return matches

def _use_constraints(self):
"""Use the constraints from the validator to assign teams to matches."""
"""Use the constraints from the validator to assign teams to matches.

Available matches are processed in reverse chronological order to maximize
the gap between team activities (judging sessions and robot matches).
"""

for entry in self.validator_data:
overlapping_rounds = entry["overlapping_rounds"]
Expand All @@ -125,7 +129,10 @@ def _use_constraints(self):
)

for round in overlapping_rounds:
available_matches = round["available_matches"]
# Process matches in reverse order (last matches first) so that
# teams are assigned to later matches whenever possible, resulting
# in larger wait times between judging and robot game activities.
available_matches = list(reversed(round["available_matches"]))
round_teams = session_teams.copy()

for match in available_matches:
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