Problem Link -> https://mirror.codeforces.com/contest/776/problem/D

My submission -> https://mirror.codeforces.com/contest/776/submission/285238557

Its pretty obvious from my code what i am trying to do. My Question is that is the logic correct? Where am I going wrong?

I just take cases of whether the door is locked or not and accordingly I build the adj list for the corresponding switch combinations.