update: contest-token.txt

update: contest-token.txt

update: README.md

update elevator/lift_vers8.py

update elevator/constant_lift.py

delete logs/lift_vers13.log

update elevator/lift_vers13.py

upload files

delete elevator/lift_vers13.py

update elevator/constant_lift.py

update elevator/lift_vers13.py

update elevator/lift_vers8.py

delete elevator/lift_vers8.1.py

update README.md

update README.md

update README.md

update README.md

update README.md

update README.md