https://codeforces.net/contest/1555/submission/124383523
https://codeforces.net/contest/1555/submission/124383204
https://codeforces.net/contest/1555/submission/124383281
These users have passed this question, but added a special judgment as to why they want to be hacked?
So is this one. Does the number 199199199199199 have a special meaning?
Maybe it's the next code of Cicada 3301 ! You never know.