CSES - Datatähti 2018 peili - Results
Submission details
Task:Kyselyt
Sender:symbols
Submission time:2017-10-02 18:41:08 +0300
Language:C++
Status:READY
Result:100
Feedback
groupverdictscore
#1ACCEPTED12
#2ACCEPTED25
#3ACCEPTED63
Test results
testverdicttimegroup
#1ACCEPTED0.04 s1details
#2ACCEPTED0.06 s2details
#3ACCEPTED0.05 s3details

Code

#include <stdio.h>
unsigned solve(long long unsigned n) {
long long unsigned first = 1;
long long unsigned last = 9;
long long unsigned length = 1;
while (n >= (last - first + 1) * length) {
n -= (last - first + 1) * length;
++length;
first = last + 1;
last = last * 10 + 9;
}
long long unsigned k = first + n / length;
n %= length;
for (n = length - n - 1; n--; k /= 10);
return k % 10;
}
int main(void) {
unsigned q;
if (scanf("%u", &q) != 1) {
return 1;
}
for (long long unsigned k; scanf("%llu", &k) == 1;) {
printf("%u\n", solve(k - 1));
}
}

Test details

Test 1

Group: 1

Verdict: ACCEPTED

input
1000
582
214
723
273
...

correct output
0
1
7
7
6
...

user output
0
1
7
7
6
...
Truncated

Test 2

Group: 2

Verdict: ACCEPTED

input
1000
615664
916441
627600
279508
...

correct output
1
2
3
2
2
...

user output
1
2
3
2
2
...
Truncated

Test 3

Group: 3

Verdict: ACCEPTED

input
1000
672274832941907421
260504693279721732
646999966092970935
100853063389774434
...

correct output
7
2
2
0
9
...

user output
7
2
2
0
9
...
Truncated