CSES - Datatähti 2022 alku - Results
Submission details
Task:Ositus
Sender:Anttono
Submission time:2021-10-08 16:51:29 +0300
Language:CPython3
Status:READY
Result:65
Feedback
groupverdictscore
#1ACCEPTED40
#2ACCEPTED25
#30
Test results
testverdicttimegroup
#1ACCEPTED0.02 s1, 2, 3details
#2ACCEPTED0.02 s1, 2, 3details
#3ACCEPTED0.02 s1, 2, 3details
#4ACCEPTED0.02 s1, 2, 3details
#5ACCEPTED0.02 s2, 3details
#6ACCEPTED0.03 s3details
#7--3details

Code

s = input()
r = 0
vr = 0
m = {}

for c in s:
    try:
        m[c]
    except KeyError:
        m[c] = [0, 0]

    if r == 0:
        r = 1
    else:
        r *= 2
        cvr = vr - m[c][1]
        cvr = max(0, cvr)
        cvr = m[c][0] - cvr
        cvr = max(0, cvr)
        r -= cvr
        vr += cvr
    m[c] = [r, vr]

r %= 1000000007
print(r)

Test details

Test 1

Group: 1, 2, 3

Verdict: ACCEPTED

input
a

correct output
1

user output
1

Test 2

Group: 1, 2, 3

Verdict: ACCEPTED

input
abcdefghij

correct output
512

user output
512

Test 3

Group: 1, 2, 3

Verdict: ACCEPTED

input
abcabaacbc

correct output
120

user output
120

Test 4

Group: 1, 2, 3

Verdict: ACCEPTED

input
aaxxxxxxaa

correct output
4

user output
4

Test 5

Group: 2, 3

Verdict: ACCEPTED

input
mfyzvoxmppoxcvktmcjkryyocfweub...

correct output
643221148

user output
643221148

Test 6

Group: 3

Verdict: ACCEPTED

input
weinscqmmpgbrlboocvtbptgbahmwv...

correct output
831644159

user output
831644159

Test 7

Group: 3

Verdict:

input
sxaoxcyrjoeieyinaqxwukgzdnhhsw...

correct output
816016015

user output
(empty)