Please tell where the code is failing testcases

#1
#2

hello @apoorvagupta1
check ur this case–>

3 4
1 2 3 4
1 2 3 4
1 2 3 4

expected output->
1, 1, 1, 2, 3, 4, 4, 4, 3, 2, 2, 3, END

#3

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