In past few days I have faced this problem very frequently. Implementing same Logic with set gives AC where as vector implementation gives TLE OR MLE.

Question 1

TLE Solution

AC Solution

I just changed the set implementation to set in order to check the running time.

Question 2

MLE Solution

AC SOlution

Above is the example of MLE v/s AC.

If anyone could tell me what I am mising...

Thanks in Advance.