Use of parent map?

[a_krisna22 (Apoorva Krisna)]

Looking at the code shown in the Tutorial, it doesn’t seem that the “parent” map is playing any role.
Am I missing something?

[abhinandankainth1999 (Abhinandan Kainth)]

@a_krisna22 parent map does not play any role here, but it can be used in questions where you have to print the path etc.