CSES - Datatähti 2022 alku - Results
Submission details
Task:Ositus (Partitioning)
Sender:Anttono
Submission time:2021-10-17 16:08:03
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
#7ACCEPTED0.14 s3details

Compiler report

input/code.cpp: In function 'int main()':
input/code.cpp:17:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<s.size();i++)
                 ~^~~~~~~~~

Code

#include <bits/stdc++.h>

using namespace std;

#define M 1000000007

typedef long long int ll;

string s;
ll r,vr;
map<char,pair<int,pair<ll,ll>>> m;

int main()
{
    cin>>s;
    ll pf = -1;
    for(int i=0;i<s.size();i++)
    {
        char c = s[i];
        if(i == 0)
        {
            r=1;
        }
        else
        {
            r *= 2;
            if(m[c].first>pf && m[c].second.first > 0)
            {
                ll cvr = vr - m[c].second.second;
                cvr = cvr > 0 ? cvr : cvr+M;
                cvr = m[c].second.first - cvr;
                cvr = cvr > 0 ? cvr : cvr+M;
                r -= cvr;
                if(r<0) r += M;
                vr += cvr;
            }
            if(m[c].second.first>0) pf = pf > m[c].first ? pf : m[c].first;
        }
        r %= M;
        vr %= M;
        m[c] = make_pair(i, make_pair(r, vr));
    }
    cout<<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: ACCEPTED

input
sxaoxcyrjoeieyinaqxwukgzdnhhsw...

correct output
816016015

user output
816016015