CSES - Datatähti 2022 alku - Results
Submission details
Task:Ositus (Partitioning)
Sender:cowperso
Submission time:2021-10-07 20:50:12
Language:C++11
Status:READY
Result:100
Feedback
groupverdictscore
#1ACCEPTED40
#2ACCEPTED25
#3ACCEPTED35
Test results
testverdicttimegroup
#1ACCEPTED0.01 s1, 2, 3details
#2ACCEPTED0.01 s1, 2, 3details
#3ACCEPTED0.01 s1, 2, 3details
#4ACCEPTED0.01 s1, 2, 3details
#5ACCEPTED0.01 s2, 3details
#6ACCEPTED0.01 s3details
#7ACCEPTED0.07 s3details

Code

#include <algorithm>
#include <iostream>
#include <vector>
using namespace std;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    string str;
    cin >> str;
    const char *c_str = str.c_str();

    vector<uint64_t> muistio;
    muistio.reserve(str.length());
    muistio[str.length() - 1] = 1;

    for (int64_t i = str.length() - 2; i >= 0; --i) {
        const char *alku = c_str + i;
        uint64_t n = 1;
        uint64_t summa = 0;
        while (*(alku + n) && (find(alku, alku + n - 1, *(alku + n - 1)) == alku + n - 1))
            summa += muistio[i + n++];

        if (find(alku, alku + n - 1, *(alku + n - 1)) == alku + n - 1)
            ++summa;
        muistio[i] = summa % 1000000007;
    }

    cout << muistio[0] % 1000000007 << '\n';
}

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: ACCEPTED

input
sxaoxcyrjoeieyinaqxwukgzdnhhsw...

correct output
816016015

user output
816016015