CSES - Datatähti 2022 alku - Results
Submission details
Task:Ositus (Partitioning)
Sender:Katto
Submission time:2021-10-10 00:34:34
Language:CPython3
Status:READY
Result:0
Feedback
groupverdictscore
#10
#20
#30
Test results
testverdicttimegroup
#10.02 s1, 2, 3details
#20.02 s1, 2, 3details
#30.02 s1, 2, 3details
#40.02 s1, 2, 3details
#50.02 s2, 3details
#60.02 s3details
#70.23 s3details

Code

string = input()
mod = int(1e9+7)
ans = ((1 << (len(string)-1)) - 1) % mod


def finder(string, ch, count):
    x = []
    cuts = 0
    for i in range(count):
        x1 = string.find(ch)+cuts
        string = string[x1+1:]
        cuts += x1 + 1
        x.append(x1)

    return x

# Periaatteellinen vika looperissa!
# esim merkkijonon "axbxcx" tapauksessa:
# jaettu merkkijono "a|xbxcx" miinustetaan kolmesti yhden kerran sijaan.


def looper(x: str, length, mod):
    sum = 0
    for i in range(len(x)):
        for j in range(len(x)):
            if j > i:
                sum = (sum + (1 << (x[i]-x[j]+length-1)) - 1) % mod
    return sum


for ch in ["a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "m", "n", "l", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z"]:
    if string.count(ch) > 1:
        count = string.count(ch)
        if count > 1:
            x = finder(string, ch, count)
            ans -= looper(x, len(string), mod)

print(ans)

Test details

Test 1

Group: 1, 2, 3

Verdict:

input
a

correct output
1

user output
0

Test 2

Group: 1, 2, 3

Verdict:

input
abcdefghij

correct output
512

user output
511

Test 3

Group: 1, 2, 3

Verdict:

input
abcabaacbc

correct output
120

user output
(empty)

Error:
Traceback (most recent call last):
  File "input/code.py", line 36, in <module>
    ans -= looper(x, len(string), mod)
  File "input/code.py", line 27, in looper
    sum = (sum + (1 << (x[i]-x[j]+length-1)) - 1) % mod
ValueError: negative shift count

Test 4

Group: 1, 2, 3

Verdict:

input
aaxxxxxxaa

correct output
4

user output
(empty)

Error:
Traceback (most recent call last):
  File "input/code.py", line 36, in <module>
    ans -= looper(x, len(string), mod)
  File "input/code.py", line 27, in looper
    sum = (sum + (1 << (x[i]-x[j]+length-1)) - 1) % mod
ValueError: negative shift count

Test 5

Group: 2, 3

Verdict:

input
mfyzvoxmppoxcvktmcjkryyocfweub...

correct output
643221148

user output
(empty)

Error:
Traceback (most recent call last):
  File "input/code.py", line 36, in <module>
    ans -= looper(x, len(string), mod)
  File "input/code.py", line 27, in looper
    sum = (sum + (1 << (x[i]-x[j]+length-1)) - 1) % mod
ValueError: negative shift count

Test 6

Group: 3

Verdict:

input
weinscqmmpgbrlboocvtbptgbahmwv...

correct output
831644159

user output
(empty)

Error:
Traceback (most recent call last):
  File "input/code.py", line 36, in <module>
    ans -= looper(x, len(string), mod)
  File "input/code.py", line 27, in looper
    sum = (sum + (1 << (x[i]-x[j]+length-1)) - 1) % mod
ValueError: negative shift count

Test 7

Group: 3

Verdict:

input
sxaoxcyrjoeieyinaqxwukgzdnhhsw...

correct output
816016015

user output
(empty)

Error:
Traceback (most recent call last):
  File "input/code.py", line 36, in <module>
    ans -= looper(x, len(string), mod)
  File "input/code.py", line 27, in looper
    sum = (sum + (1 << (x[i]-x[j]+length-1)) - 1) % mod
ValueError: negative shift count