i just wanted to know if yes then where to use it and where to not to use it(vector)
no, if you use vector in a similar way than array (without reallocations)
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Yes,
Used vector here: It gave TLE
Used array here: Got accepted
These 2 are the solutions of same question.
But this condition happens rarely, when the time limit is very strict.
But for knowledge remember that arrays are faster than vector.
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the problem is not the use of vector but how you use it. Check the running time of your solution that uses vector when you are not making a copy of vector a each time you call the function construct
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Okey, sorry that was a fault on my side.
But anyway thanks for correcting me, appreciate it.
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