CSES - Datatähti 2026 alku

Submission details
Task:	Palindromi
Sender:	poppendop
Submission time:	2025-11-06 18:43:32 +0200
Language:	Python3 (CPython3)
Status:	READY
Result:	0

Feedback
group	verdict	score
#1	RUNTIME ERROR	0

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

Code

t = input()
a = len(t)
s = 0
for i in range(round(s/2):
    x = t[i]
    y = t[(-1 - i)]
    if x != y:
        t[i] = y
        s += 1
print(s)

Test details

Test 1 (public)

Verdict: RUNTIME ERROR

input
`datatahti` view save

correct output
`3` view save

user output
(empty)

Error:

File "/box/input/code.py", line 4
    for i in range(round(s/2):
                             ^
SyntaxError: invalid syntax

Test 2 (public)

Verdict: RUNTIME ERROR

input
`saippuakauppias` view save

correct output
`0` view save

user output
(empty)

Error:

File "/box/input/code.py", line 4
    for i in range(round(s/2):
                             ^
SyntaxError: invalid syntax

Test 3 (public)

Verdict: RUNTIME ERROR

input
`a` view save

correct output
`0` view save

user output
(empty)

Error:

File "/box/input/code.py", line 4
    for i in range(round(s/2):
                             ^
SyntaxError: invalid syntax

Test 4 (public)

Verdict: RUNTIME ERROR

input
`aa` view save

correct output
`0` view save

user output
(empty)

Error:

File "/box/input/code.py", line 4
    for i in range(round(s/2):
                             ^
SyntaxError: invalid syntax

Test 5 (public)

Verdict: RUNTIME ERROR

input
`abc` view save

correct output
`1` view save

user output
(empty)

Error:

File "/box/input/code.py", line 4
    for i in range(round(s/2):
                             ^
SyntaxError: invalid syntax

Test 6 (public)

Verdict: RUNTIME ERROR

input
`aybabtu` view save

correct output
`2` view save

user output
(empty)

Error:

File "/box/input/code.py", line 4
    for i in range(round(s/2):
                             ^
SyntaxError: invalid syntax

Test 7 (public)

Verdict: RUNTIME ERROR

input
`abacabaca` view save

correct output
`2` view save

user output
(empty)

Error:

File "/box/input/code.py", line 4
    for i in range(round(s/2):
                             ^
SyntaxError: invalid syntax

Test 8 (public)

Verdict: RUNTIME ERROR

input
`bbbbaaaababbbbbaabaaabaaaaabab...` view save

correct output
`23` view save

user output
(empty)

Error:

File "/box/input/code.py", line 4
    for i in range(round(s/2):
                             ^
SyntaxError: invalid syntax

Test 9 (public)

Verdict: RUNTIME ERROR

input
`acbaaabaabaddaccdcccbcdbdddacd...` view save

correct output
`38` view save

user output
(empty)

Error:

File "/box/input/code.py", line 4
    for i in range(round(s/2):
                             ^
SyntaxError: invalid syntax

Test 10 (public)

Verdict: RUNTIME ERROR

input
`uaqtmfftecryanvpshxsodjrllqnqp...` view save

correct output
`49` view save

user output
(empty)

Error:

File "/box/input/code.py", line 4
    for i in range(round(s/2):
                             ^
SyntaxError: invalid syntax

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 (poppendop)