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Datatähti 2018 alku

Start:2017-10-02 00:00:00
End:2017-10-16 00:00:00
 

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CSES - Datatähti 2018 alku - Results
History
2017-10-11 07:38:43100
2017-10-11 07:30:3337
2017-10-10 21:11:1337
2017-10-10 21:10:350
2017-10-10 20:26:350
Task:Kyselyt
Sender:niklash
Submission time:2017-10-11 07:38:43
Language:C++
Status:READY
Score:100

Feedback

groupverdictscore
#1ACCEPTED12
#2ACCEPTED25
#3ACCEPTED63

Test results

testverdicttime (s)group
#1ACCEPTED0.06 / 1.001details
#2ACCEPTED0.07 / 1.002details
#3ACCEPTED0.07 / 1.003details

Code

#include <iostream>
#include <cmath>

typedef unsigned long long int huge;
// max value ~ 1.8e19

using namespace std;

huge startpos(int n)
{
	if (n==1) return 10;
	return startpos(n-1)+(huge)n*(huge)(9*pow(10,n-1));
}

int getstage(huge n)
{
	int c=1;
	while (1)
	{
		if ((n>=startpos(c))&&(n<startpos(c+1))) return c;
		c++;
	}
}

int unelegant(huge n)
{
	if (n<10) return (int)n;
	int N=-1;
	huge stage=getstage(n)+1;
	huge s=startpos(stage-1);
	for (huge i=0;i<stage;++i)
		if ((n-s)%stage==i) 
			N=( (n-s-i)/(stage*(huge)pow(10,stage-1-i))+(huge)(i==0) )%10;
	return N;
}

int main(int argc, char** argv)
{
	int maara; cin>>maara;
	huge values[maara];
	for (int i=0;i<maara;++i) cin>>values[i];
	for (int i=0;i<maara;++i) cout<<unelegant(values[i])<<endl;
	//huge n; cin>>n; cout<<unelegant(n)<<endl;


	// when n>=startpos(5) output turns into gibberish
	// 16 999999989999999999999999000000 1 000000000000000010000000000000
	/*
	for (int i=2;i<18;++i)
	{
		cout<<startpos(i)<<" ";
		for (int j=-30;j<31;++j)
			cout<<unelegant(startpos(i)+(huge)j);
		cout<<endl;
	}*/

	return 0;
}

Test details

Test 1

Group: 1

Verdict: ACCEPTED

input
1000
582
214
723
273
480
280
237
204
134
210
565
640
784
508
846
532
465
952
205
...
view   save

correct output
0
1
7
7
6
1
5
4
7
6
2
2
2
2
8
2
1
3
1
8
...
view   save

user output
0
1
7
7
6
1
5
4
7
6
2
2
2
2
8
2
1
3
1
8
...
view   save

Test 2

Group: 2

Verdict: ACCEPTED

input
1000
615664
916441
627600
279508
126605
944125
25887
440405
352957
206746
951305
821686
716797
333476
430123
167570
619834
411383
459670
...
view   save

correct output
1
2
3
2
2
8
7
9
8
3
7
1
9
8
4
3
1
9
9
6
...
view   save

user output
1
2
3
2
2
8
7
9
8
3
7
1
9
8
4
3
1
9
9
6
...
view   save

Test 3

Group: 3

Verdict: ACCEPTED

input
1000
672274832941907421
260504693279721732
646999966092970935
100853063389774434
469646937576313460
292789544562527987
202678876957048242
921044261294332160
293497307441838185
889420403130803486
887773296767104352
272588988734184089
900854413164191389
306838570888252671
321818592757748092
632312861733842235
590425060048634753
921705179835679834
711775852688052272
...
view   save

correct output
7
2
2
0
9
7
7
2
0
4
0
3
0
5
9
9
3
1
2
7
...
view   save

user output
7
2
2
0
9
7
7
2
0
4
0
3
0
5
9
9
3
1
2
7
...
view   save