Why showing tle in 1 case

#1

although i have use logn to solve pow but my sl. is showing tle please tell mistake.
https://ide.codingblocks.com/s/180444 is my code link

#2

Your code is absolutely correct. But still it is prone to tle in tighter cases. Try these two things to reduce time.

  1. Whenever your pass a vector<vector> in the function use & to pass by reference as it does not make a copy and uses the same previous vector<vector> .
    Eg : vector<vector> &a
  2. In pow function use iterative method rather than recursion approach.
#3

@Adarshrajpandey if you feel your issue has been resolved then please mark this doubt as resolved.

#4

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