One test case run error

#1
#2

Hello @pranjuldwivedi120568 dont use STL write your own logic.
because of using STL you are getting this error.
though i have tried passing it by reference but still there is the same error.

#3

can i use backtracking @Tushar?

#4

@pranjuldwivedi120568 i think there is no need of it.

#5

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