CSES - Datatähti 2026 alku

Submission details
Task:	Palindromi
Sender:	lukarantalainen
Submission time:	2025-10-27 18:38:53 +0200
Language:	Python3 (CPython3)
Status:	READY
Result:	0

Feedback
group	verdict	score
#1	WRONG ANSWER	0

Test results
test	verdict	time
#1	WRONG ANSWER	0.02 s	details
#2	WRONG ANSWER	0.02 s	details
#3	WRONG ANSWER	0.02 s	details
#4	WRONG ANSWER	0.02 s	details
#5	WRONG ANSWER	0.02 s	details
#6	WRONG ANSWER	0.02 s	details
#7	WRONG ANSWER	0.02 s	details
#8	WRONG ANSWER	0.02 s	details
#9	WRONG ANSWER	0.02 s	details
#10	WRONG ANSWER	0.02 s	details

Code

s = input()

length = len(s)

charlist = list(s)
revlist = charlist[::-1]

def change_char(half):
    for i in range(int(half)):
        revchar = revlist[i]
        if revchar != charlist[i]:
            revlist[i] = charlist[i]
        else: 
            pass

    return revlist[::-1]

if length%2 == 0:
    half = length/2
    
    print(change_char(half))
        
else:
    half = length/2-1
    print(change_char(half))

Test details

Test 1 (public)

Verdict: WRONG ANSWER

input
`datatahti` view save

correct output
`3` view save

user output
`['d', 'a', 't', 'a', 't', 'a',...` view save

Test 2 (public)

Verdict: WRONG ANSWER

input
`saippuakauppias` view save

correct output
`0` view save

user output
`['s', 'a', 'i', 'p', 'p', 'u',...` view save

Test 3 (public)

Verdict: WRONG ANSWER

input
`a` view save

correct output
`0` view save

user output
`['a']` view save

Test 4 (public)

Verdict: WRONG ANSWER

input
`aa` view save

correct output
`0` view save

user output
`['a', 'a']` view save

Test 5 (public)

Verdict: WRONG ANSWER

input
`abc` view save

correct output
`1` view save

user output
`['a', 'b', 'c']` view save

Test 6 (public)

Verdict: WRONG ANSWER

input
`aybabtu` view save

correct output
`2` view save

user output
`['a', 'y', 'b', 'a', 'b', 'y',...` view save

Test 7 (public)

Verdict: WRONG ANSWER

input
`abacabaca` view save

correct output
`2` view save

user output
`['a', 'b', 'a', 'c', 'a', 'b',...` view save

Test 8 (public)

Verdict: WRONG ANSWER

input
`bbbbaaaababbbbbaabaaabaaaaabab...` view save

correct output
`23` view save

user output
`['b', 'b', 'b', 'b', 'a', 'a',...` view save

Test 9 (public)

Verdict: WRONG ANSWER

input
`acbaaabaabaddaccdcccbcdbdddacd...` view save

correct output
`38` view save

user output
`['a', 'c', 'b', 'a', 'a', 'a',...` view save

Test 10 (public)

Verdict: WRONG ANSWER

input
`uaqtmfftecryanvpshxsodjrllqnqp...` view save

correct output
`49` view save

user output
`['u', 'a', 'q', 't', 'm', 'f',...` view save

Datatähti 2026 alku

Palindromi

Code

Test details

Test 1 (public)

Test 2 (public)

Test 3 (public)

Test 4 (public)

Test 5 (public)

Test 6 (public)

Test 7 (public)

Test 8 (public)

Test 9 (public)

Test 10 (public)

Tasks

Submissions (lukarantalainen)