CSES - BOI 2026 Mirror Day 2

Submission details
Task:	Distances
Sender:	Dozenal
Submission time:	2026-04-19 14:55:33 +0300
Language:	C++ (C++20)
Status:	READY
Result:	6

Feedback
subtask	verdict	score
#1	WRONG ANSWER	0
#2	WRONG ANSWER	0
#3	ACCEPTED	6
#4	WRONG ANSWER	0
#5	WRONG ANSWER	0
#6	WRONG ANSWER	0

Test results
test	verdict	subtask
#1	WRONG ANSWER	1, 4, 6	details
#2	ACCEPTED	1, 2, 3, 4, 5, 6	details
#3	ACCEPTED	1, 3, 4, 5, 6	details
#4	WRONG ANSWER	1, 2, 4, 6	details
#5	ACCEPTED	1, 3, 4, 5, 6	details
#6	WRONG ANSWER	1, 4, 6	details
#7	WRONG ANSWER	1, 4, 6	details
#8	WRONG ANSWER	1, 2, 4, 6	details
#9	ACCEPTED	1, 3, 4, 5, 6	details
#10	WRONG ANSWER	1, 4, 5, 6	details
#11	WRONG ANSWER	1, 4, 6	details
#12	WRONG ANSWER	1, 4, 6	details
#13	WRONG ANSWER	1, 4, 6	details
#14	WRONG ANSWER	1, 6	details
#15	WRONG ANSWER	1, 2, 6	details
#16	WRONG ANSWER	4, 6	details
#17	WRONG ANSWER	4, 6	details
#18	ACCEPTED	3, 4, 5, 6	details
#19	WRONG ANSWER	4, 5, 6	details
#20	WRONG ANSWER	4, 5, 6	details
#21	WRONG ANSWER	5, 6	details
#22	WRONG ANSWER	5, 6	details
#23	WRONG ANSWER	2, 6	details
#24	ACCEPTED	3, 4, 5, 6	details
#25	WRONG ANSWER	4, 5, 6	details
#26	WRONG ANSWER	4, 5, 6	details
#27	WRONG ANSWER	5, 6	details
#28	WRONG ANSWER	5, 6	details
#29	WRONG ANSWER	2, 6	details
#30	ACCEPTED	3, 4, 5, 6	details
#31	WRONG ANSWER	4, 5, 6	details
#32	WRONG ANSWER	4, 5, 6	details
#33	WRONG ANSWER	4, 5, 6	details
#34	WRONG ANSWER	5, 6	details
#35	WRONG ANSWER	5, 6	details
#36	WRONG ANSWER	5, 6	details
#37	WRONG ANSWER	6	details
#38	WRONG ANSWER	6	details
#39	WRONG ANSWER	2, 6	details
#40	WRONG ANSWER	6	details
#41	WRONG ANSWER	6	details
#42	WRONG ANSWER	6	details
#43	WRONG ANSWER	6	details
#44	WRONG ANSWER	6	details

Compiler report

input/code.cpp:3:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    3 | main(){
      | ^~~~
input/code.cpp: In function 'int main()':
input/code.cpp:4:28: warning: operation on 'n' may be undefined [-Wsequence-point]
    4 |     std::cin>>n>>k;k=(n*n+n++)/2-k;
      |                           ~^~
input/code.cpp:4:28: warning: operation on 'n' may be undefined [-Wsequence-point]
input/code.cpp:4:28: warning: operation on 'n' may be undefined [-Wsequence-point]
input/code.cpp:4:28: warning: operation on 'n' may be undefined [-Wsequence-point]
input/code.cpp:5:49: warning: operation on 'k' may be undefined [-Wsequence-point]
    5 |     for(int d=1;--n;printf("%d %d ",(k<0)?2*C:(k-=n),((n+k<=0)?(d*d-C/d*C/d):n)))while(C%++d);
      |                                               ~~^~~~

Code

#include <iostream>
int n,k,C=55440; 
main(){
    std::cin>>n>>k;k=(n*n+n++)/2-k;
    for(int d=1;--n;printf("%d %d ",(k<0)?2*C:(k-=n),((n+k<=0)?(d*d-C/d*C/d):n)))while(C%++d);
}

Test details

Test 1

Subtask: 1, 4, 6

Verdict: WRONG ANSWER

input
`3 2` view save

correct output
`1 1 1 2 2 2` view save

user output
`1 3 -1 2 110880 -192099584` view save

Test 2

Subtask: 1, 2, 3, 4, 5, 6

Verdict: ACCEPTED

input
`1 0` view save

correct output
`1 0` view save

user output
`0 1` view save

Test 3

Subtask: 1, 3, 4, 5, 6

Verdict: ACCEPTED

input
`2 0` view save

correct output
`1 0 804289383 846930886` view save

user output
`1 2 0 1` view save

Test 4

Subtask: 1, 2, 4, 6

Verdict: WRONG ANSWER

input
`2 1` view save

correct output
`1 0 2 0` view save

user output
`0 2 -1 1` view save

Test 5

Subtask: 1, 3, 4, 5, 6

Verdict: ACCEPTED

input
`3 0` view save

correct output
`1 0 804289383 846930886 681692777 714636915` view save

user output
`3 3 1 2 0 1` view save

Test 6

Subtask: 1, 4, 6

Verdict: WRONG ANSWER

input
`3 1` view save

correct output
`1 0 2 0 804289383 846930886` view save

user output
`2 3 0 2 -1 1` view save

Test 7

Subtask: 1, 4, 6

Verdict: WRONG ANSWER

input
`3 2` view save

correct output
`1 1 1 2 2 2` view save

user output
`1 3 -1 2 110880 -192099584` view save

Test 8

Subtask: 1, 2, 4, 6

Verdict: WRONG ANSWER

input
`3 3` view save

correct output
`1 0 2 0 3 0` view save

user output
`0 3 -2 2 110880 -192099584` view save

Test 9

Subtask: 1, 3, 4, 5, 6

Verdict: ACCEPTED

input
`4 0` view save

correct output
`1 0 804289383 846930886 681692777 714636915 957747793 424238335` view save

user output
`6 4 3 3 1 2 0 1` view save

Test 10

Subtask: 1, 4, 5, 6

Verdict: WRONG ANSWER

input
`4 1` view save

correct output
`1 0 2 0 804289383 846930886 681692777 714636915` view save

user output
`5 4 2 3 0 2 -1 1` view save

Test 11

Subtask: 1, 4, 6

Verdict: WRONG ANSWER

input
`4 2` view save

correct output
`21392 0 1 0 0 510510 804289383 846930886` view save

user output
`4 4 1 3 -1 2 110880 -122943719...` view save

Test 12

Subtask: 1, 4, 6

Verdict: WRONG ANSWER

input
`4 3` view save

correct output
`1 0 2 0 3 0 804289383 846930886` view save

user output
`3 4 0 3 -2 2 110880 -122943719...` view save

Test 13

Subtask: 1, 4, 6

Verdict: WRONG ANSWER

input
`4 4` view save

correct output
`21392 0 1 0 2 0 0 510510` view save

user output
`2 4 -1 3 110880 2 110880 -1229...` view save

Test 14

Subtask: 1, 6

Verdict: WRONG ANSWER

input
`4 5` view save

correct output
`21392 0 22600 0 1 0 0 510510` view save

user output
`1 4 -2 3 110880 -192099584 110...` view save

Test 15

Subtask: 1, 2, 6

Verdict: WRONG ANSWER

input
`4 6` view save

correct output
`1 0 2 0 3 0 4 0` view save

user output
`0 4 -3 3 110880 -192099584 110...` view save

Test 16

Subtask: 4, 6

Verdict: WRONG ANSWER

input
`5 5` view save

correct output
`21392 0 22600 0 1 0 0 510510 804289383 846930886` view save

user output
`5 5 1 4 -2 3 110880 -122943719...` view save

Test 17

Subtask: 4, 6

Verdict: WRONG ANSWER

input
`6 5` view save

correct output
`21392 0 22600 0 1 0 0 510510 804289383 846930886 ...` view save

user output
`10 6 5 5 1 4 -2 3 110880 -8537...` view save

Test 18

Subtask: 3, 4, 5, 6

Verdict: ACCEPTED

input
`98 0` view save

correct output
`1 0 804289383 846930886 681692777 714636915 957747793 424238335 719885386 649760492 ...` view save

user output
`4753 98 4656 97 4560 96 4465 9...` view save

Test 19

Subtask: 4, 5, 6

Verdict: WRONG ANSWER

input
`98 97` view save

correct output
`21392 0 22600 0 30056 0 34848 0 38584 0 ...` view save

user output
`4656 98 4559 97 4463 96 4368 9...` view save

Test 20

Subtask: 4, 5, 6

Verdict: WRONG ANSWER

input
`98 98` view save

correct output
`21392 0 22600 0 30056 0 34848 0 38584 0 ...` view save

user output
`4655 98 4558 97 4462 96 4367 9...` view save

Test 21

Subtask: 5, 6

Verdict: WRONG ANSWER

input
`98 1185` view save

correct output
`21392 0 22600 0 30056 0 34848 0 38584 0 ...` view save

user output
`3568 98 3471 97 3375 96 3280 9...` view save

Test 22

Subtask: 5, 6

Verdict: WRONG ANSWER

input
`98 1188` view save

correct output
`21392 0 22600 0 30056 0 34848 0 38584 0 ...` view save

user output
`3565 98 3468 97 3372 96 3277 9...` view save

Test 23

Subtask: 2, 6

Verdict: WRONG ANSWER

input
`98 4753` view save

correct output
`1 0 2 0 3 0 4 0 5 0 ...` view save

user output
`0 98 -97 97 110880 -192099584 ...` view save

Test 24

Subtask: 3, 4, 5, 6

Verdict: ACCEPTED

input
`99 0` view save

correct output
`1 0 804289383 846930886 681692777 714636915 957747793 424238335 719885386 649760492 ...` view save

user output
`4851 99 4753 98 4656 97 4560 9...` view save

Test 25

Subtask: 4, 5, 6

Verdict: WRONG ANSWER

input
`99 98` view save

correct output
`21392 0 22600 0 30056 0 34848 0 38584 0 ...` view save

user output
`4753 99 4655 98 4558 97 4462 9...` view save

Test 26

Subtask: 4, 5, 6

Verdict: WRONG ANSWER

input
`99 99` view save

correct output
`21392 0 22600 0 30056 0 34848 0 38584 0 ...` view save

user output
`4752 99 4654 98 4557 97 4461 9...` view save

Test 27

Subtask: 5, 6

Verdict: WRONG ANSWER

input
`99 1201` view save

correct output
`21392 0 22600 0 30056 0 34848 0 38584 0 ...` view save

user output
`3650 99 3552 98 3455 97 3359 9...` view save

Test 28

Subtask: 5, 6

Verdict: WRONG ANSWER

input
`99 1212` view save

correct output
`21392 0 22600 0 30056 0 34848 0 38584 0 ...` view save

user output
`3639 99 3541 98 3444 97 3348 9...` view save

Test 29

Subtask: 2, 6

Verdict: WRONG ANSWER

input
`99 4851` view save

correct output
`1 0 2 0 3 0 4 0 5 0 ...` view save

user output
`0 99 -98 98 110880 -192099584 ...` view save

Test 30

Subtask: 3, 4, 5, 6

Verdict: ACCEPTED

input
`100 0` view save

correct output
`1 0 804289383 846930886 681692777 714636915 957747793 424238335 719885386 649760492 ...` view save

user output
`4950 100 4851 99 4753 98 4656 ...` view save

Test 31

Subtask: 4, 5, 6

Verdict: WRONG ANSWER

input
`100 1` view save

correct output
`1 0 2 0 804289383 846930886 681692777 714636915 957747793 424238335 ...` view save

user output
`4949 100 4850 99 4752 98 4655 ...` view save

Test 32

Subtask: 4, 5, 6

Verdict: WRONG ANSWER

input
`100 5` view save

correct output
`21392 0 22600 0 1 0 0 510510 804289383 846930886 ...` view save

user output
`4945 100 4846 99 4748 98 4651 ...` view save

Test 33

Subtask: 4, 5, 6

Verdict: WRONG ANSWER

input
`100 100` view save

correct output
`21392 0 22600 0 30056 0 34848 0 38584 0 ...` view save

user output
`4850 100 4751 99 4653 98 4556 ...` view save

Test 34

Subtask: 5, 6

Verdict: WRONG ANSWER

input
`100 1000` view save

correct output
`21392 0 22600 0 30056 0 34848 0 38584 0 ...` view save

user output
`3950 100 3851 99 3753 98 3656 ...` view save

Test 35

Subtask: 5, 6

Verdict: WRONG ANSWER

input
`100 1232` view save

correct output
`21392 0 22600 0 30056 0 34848 0 38584 0 ...` view save

user output
`3718 100 3619 99 3521 98 3424 ...` view save

Test 36

Subtask: 5, 6

Verdict: WRONG ANSWER

input
`100 1237` view save

correct output
`21392 0 22600 0 30056 0 34848 0 38584 0 ...` view save

user output
`3713 100 3614 99 3516 98 3419 ...` view save

Test 37

Subtask: 6

Verdict: WRONG ANSWER

input
`100 2222` view save

correct output
`21392 0 22600 0 30056 0 34848 0 38584 0 ...` view save

user output
`2728 100 2629 99 2531 98 2434 ...` view save

Test 38

Subtask: 6

Verdict: WRONG ANSWER

input
`100 3395` view save

correct output
`21392 0 22600 0 30056 0 34848 0 38584 0 ...` view save

user output
`1555 100 1456 99 1358 98 1261 ...` view save

Test 39

Subtask: 2, 6

Verdict: WRONG ANSWER

input
`100 4950` view save

correct output
`1 0 2 0 3 0 4 0 5 0 ...` view save

user output
`0 100 -99 99 110880 -192099584...` view save

Test 40

Subtask: 6

Verdict: WRONG ANSWER

input
`100 4949` view save

correct output
`21392 0 22600 0 30056 0 34848 0 38584 0 ...` view save

user output
`1 100 -98 99 110880 -192099584...` view save

Test 41

Subtask: 6

Verdict: WRONG ANSWER

input
`100 4948` view save

correct output
`21392 0 22600 0 30056 0 34848 0 38584 0 ...` view save

user output
`2 100 -97 99 110880 98 110880 ...` view save

Test 42

Subtask: 6

Verdict: WRONG ANSWER

input
`100 4930` view save

correct output
`21392 0 22600 0 30056 0 34848 0 38584 0 ...` view save

user output
`20 100 -79 99 110880 98 110880...` view save

Test 43

Subtask: 6

Verdict: WRONG ANSWER

input
`100 4920` view save

correct output
`21392 0 22600 0 30056 0 34848 0 38584 0 ...` view save

user output
`30 100 -69 99 110880 98 110880...` view save

Test 44

Subtask: 6

Verdict: WRONG ANSWER

input
`100 4900` view save

correct output
`21392 0 22600 0 30056 0 34848 0 38584 0 ...` view save

user output
`50 100 -49 99 110880 98 110880...` view save

BOI 2026 Mirror Day 2

Distances

Compiler report

Code

Test details

Test 1

Test 2

Test 3

Test 4

Test 5

Test 6

Test 7

Test 8

Test 9

Test 10

Test 11

Test 12

Test 13

Test 14

Test 15

Test 16

Test 17

Test 18

Test 19

Test 20

Test 21

Test 22

Test 23

Test 24

Test 25

Test 26

Test 27

Test 28

Test 29

Test 30

Test 31

Test 32

Test 33

Test 34

Test 35

Test 36

Test 37

Test 38

Test 39

Test 40

Test 41

Test 42

Test 43

Test 44

Tasks

Submissions (Dozenal)