CSES - Putka Open 2015 – 5/6 - Results
Submission details
Task:Käännöt
Sender:
Submission time:2015-11-07 18:08:28 +0200
Language:C++
Status:READY
Result:100
Feedback
groupverdictscore
#1ACCEPTED15
#2ACCEPTED41
#3ACCEPTED44
Test results
testverdicttimegroup
#1ACCEPTED0.06 s1details
#2ACCEPTED0.06 s1details
#3ACCEPTED0.05 s1details
#4ACCEPTED0.06 s1details
#5ACCEPTED0.05 s1details
#6ACCEPTED0.06 s2details
#7ACCEPTED0.05 s2details
#8ACCEPTED0.06 s2details
#9ACCEPTED0.05 s2details
#10ACCEPTED0.05 s2details
#11ACCEPTED0.07 s3details
#12ACCEPTED0.07 s3details
#13ACCEPTED0.06 s3details
#14ACCEPTED0.07 s3details
#15ACCEPTED0.05 s3details

Code

#include <iostream>
#define ll long long
const ll M=1e9+7;
using namespace std;
string s;
ll hlp[101010][10];
ll cnt[10];
int main() {
ios_base::sync_with_stdio(0);
cin.tie(0);
cin>>s;
int n=s.size();
for (int i=0;i<n;i++) {
ll dig=s[i]-'0';
cnt[dig]++;
}
for (int i=0;2*i<n;i++) {
int k=n-i-1;
for (int j=1;j<10;j++) {
hlp[i][j]+=cnt[j];
if (i!=k) hlp[k][j]+=cnt[j];
if (i>0) {
hlp[i][j]+=hlp[i-1][j];
if (i!=k) hlp[k][j]+=hlp[k+1][j];
}
hlp[i][j]%=M;
hlp[k][j]%=M;
}
cnt[s[i]-'0']--;
cnt[s[k]-'0']--;
}
/* for (int i=0;i<n;i++) {
for (int j=1;j<10;j++) cout<<hlp[i][j]<<" ";
cout<<endl;
}
*/
ll res=0;
ll a=1;
for (ll i=n-1;i>=0;i--) {
for (int j=1;j<10;j++) {
ll tmp=hlp[i][j]*j;
tmp%=M;
tmp*=a;
tmp%=M;
res+=tmp;
res%=M;
}
ll tmp=((ll)(n-i))*(n-i-1)/2;
tmp+=i*(i+1)/2;
tmp%=M;
tmp*=s[i]-'0';
tmp*=a;
res+=tmp;
res%=M;
a*=10;
a%=M;
}
cout<<res<<"\n";
}

Test details

Test 1

Group: 1

Verdict: ACCEPTED

input
825864589849478186996872119675...

correct output
457966376

user output
457966376

Test 2

Group: 1

Verdict: ACCEPTED

input
191658935877461356157657491987...

correct output
176954270

user output
176954270

Test 3

Group: 1

Verdict: ACCEPTED

input
348988594526165698179722696175...

correct output
338693404

user output
338693404

Test 4

Group: 1

Verdict: ACCEPTED

input
959161872742625799336943933597...

correct output
585928712

user output
585928712

Test 5

Group: 1

Verdict: ACCEPTED

input
925429363246698689162197257943...

correct output
517617697

user output
517617697

Test 6

Group: 2

Verdict: ACCEPTED

input
972591294933975999938266397628...

correct output
667001154

user output
667001154

Test 7

Group: 2

Verdict: ACCEPTED

input
275688881195265674233697529772...

correct output
213272855

user output
213272855

Test 8

Group: 2

Verdict: ACCEPTED

input
654678934762543351831648468742...

correct output
465477034

user output
465477034

Test 9

Group: 2

Verdict: ACCEPTED

input
852895263384279396767531876338...

correct output
225052500

user output
225052500

Test 10

Group: 2

Verdict: ACCEPTED

input
257723665884149498894428498943...

correct output
169577498

user output
169577498

Test 11

Group: 3

Verdict: ACCEPTED

input
965391619923528543348143963721...

correct output
458795777

user output
458795777

Test 12

Group: 3

Verdict: ACCEPTED

input
934996116481518541954869782274...

correct output
38884659

user output
38884659

Test 13

Group: 3

Verdict: ACCEPTED

input
356521595763548549682719476371...

correct output
335143519

user output
335143519

Test 14

Group: 3

Verdict: ACCEPTED

input
691571977153731228387836644955...

correct output
504860195

user output
504860195

Test 15

Group: 3

Verdict: ACCEPTED

input
882254176987218851832315176774...

correct output
32749477

user output
32749477