Please help me with this question

#1

https://cses.fi/problemset/task/1073
link to the question

#2

please solve my doubt

#3

Try this:

#4

can you please explain me the concept behind this question

#5

We need to make minimum towers. First we create a vector and store first value in it. Till now, we have made one tower. After that for each value if this value is greater than all values in vector then we have to create a new tower else we will put this on another whose value is just greater than this value.