Vivek And Party Problem

#1

Sir, i think this problem is talking about Topological Sorting.
My Solution–https://ide.codingblocks.com/s/75106
Problem Link–https://hack.codingblocks.com/contests/c/668/781
Where am i going wrong?

#2

for the tc
5
A
B
C
D
E
5
C A
D A
B D
E B
E C

your code outputs E C B D A
correct answer E B C D A

because B comes before C in the input and there is no relation between B and C.

#3

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