substitution

This challenge has been solved by 15.4% of actively participating users.
Position Team Solved
1 First to solve this challenge! Eric Li 1 day, 13 hours after release (2020-03-23 13:10:58)
2 Second to solve this challenge! ismaildude 5 months, 4 days after release (2020-08-24 07:30:28)
3 Third to solve this challenge! TODO SQL inject here 7 months, 6 days after release (2020-10-26 16:25:34)
4 Vvvo 11 months after release (2021-02-19 02:45:00)