CSES - Datatähti 2022 alku - Results
Submission details
Task:Ositus (Partitioning)
Sender:tonero
Submission time:2021-10-17 23:02:02
Language:C++17
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
#7ACCEPTED0.06 s3details

Compiler report

input/code.cpp: In function 'int main()':
input/code.cpp:58:17: warning: unused variable 'dbl' [-Wunused-variable]
     long double dbl = 0.5;
                 ^~~

Code

#pragma GCC optimize("Ofast")
#pragma GCC target("avx,avx2,fma")

#include <bits/stdc++.h>

using namespace std;

#define ull unsigned long long
#define ll long long
ull ans = 0;

vector<ull> cache;
std::string line;

ull calc(ull startOffset){
    ull fnd[28] = {0};
    bool brk = false;
    ull tmpAns = 0ull;
    for (ull i = startOffset; i < line.length(); ++i) {
        fnd[line[i]-97]++;
        if(fnd[line[i]-97] > 1) {
            brk = true;
            break;
        }
        if(i >= line.length()-1) {
            tmpAns = (tmpAns + 1) % (1000000007ull);
            brk = true;
            break;
        }
        if(cache[i+1] == -1ull){
            tmpAns = (tmpAns + calc(i+1)) % (1000000007ull);
        }else{
            tmpAns = (tmpAns + cache[i+1]) % (1000000007ull);
        }
    }
    if(!brk){
        tmpAns = (tmpAns + 1) % (1000000007ull);
    }
    cache[startOffset] = tmpAns;
    return tmpAns;
}

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


    std::getline(std::cin, line);

    cache = vector<ull>(line.length(), -1);

    for (int i = line.length()-1; i >= 0; --i) {
        calc(i);
    }

    ans = calc(0);

    long double dbl = 0.5;

    cout << ans;
    //cout << ((ull) (ans * dbl)) % (1000000007ull);
    cout << '\n';
    flush(std::cout);
}

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