Not able to get the logic of it

#1

Given an array S of size N , check if it is possible to split sequence into two sequences -
s1 to si and si to sN such that first sequence is strictly decreasing and second is strictly increasing. Print true/false as output.

Input Format
First line contains a single integer N denoting the size of the input.
Next N lines contain a single integer each denoting the elements of the array S.

#2

LOGIC:
once sequence is increasing then it can’t be decreasing

CHECK OUT THIS

if you have any doubt feel free to ask

#3

i didnt get he 15 line why we have written prev=cureent plz explain

#4

for next iteration current element will be prev element

#5

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