What is wrong with the for loop?

Question

Python

There is this code:

a = int(input())
b = input()
s = set()
for i in range(a):
    if b not in s:
        s.add(b)
        print('НЕТ')
    else:
        print('ДА')

The task is to display NO if there is no such word in the list yet and YES if such a word is already in the list, and to do this a certain number of times. For some reason, the cycle requires an extra press of enter at the end, why is that?

Answer 1

Excuse me, have you even run your script? Your script makes the first request (I don't know, obviously, the number of cycles for some reason), then it asks for a single word - and that's it. Displays "NO" once, of course, and then N times the word "YES", where N is the number you entered minus one. And nothing else, no waiting for the next input.
What did you really want to do? If you wanted to request a response in a loop, then for example like this:

a = int(input())
s = set()
for i in range(a):
    b = input()
    if b not in s:
        s.add(b)
        print('НЕТ')
    else:
        print('ДА')