traffic_control_input.zip:Zone.Identifier

[ZoneTransfer]
ZoneId=3
ReferrerUrl=https://www.facebook.com/codingcompetitions/hacker-cup/2021/round-1/problems/B
HostUrl=https://www.facebook.com/async/codingcompetitions/download-input-for-submission/?contest_id=815634839334649&problem_id=355209946196784&participation_type=CANONICAL&is_validation_data=0&is_encrypted_data=1&ext=1631644602&hash=AeQQudbod58p5CCYn5I