1 test case not passed

#1

Here is my code https://ide.codingblocks.com/s/254052 . It has passed half pretest, and I am not able to figure out the error.

#2

@tilakparth123 hey ,For this test case your code did not print A in the order of drinking.
5
A
B
C
D
E
5
C A
D A
B D
E B
E C

#3

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