CSES - BOI 2026 Mirror Day 2

Submission details
Task:	Distances
Sender:	Juan_Alejandro
Submission time:	2026-04-17 13:35:33 +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	time	subtask
#1	ACCEPTED	0.01 s	1, 4, 6	details
#2	ACCEPTED	0.00 s	1, 2, 3, 4, 5, 6	details
#3	ACCEPTED	0.00 s	1, 3, 4, 5, 6	details
#4	ACCEPTED	0.00 s	1, 2, 4, 6	details
#5	ACCEPTED	0.00 s	1, 3, 4, 5, 6	details
#6	ACCEPTED	0.00 s	1, 4, 6	details
#7	ACCEPTED	0.00 s	1, 4, 6	details
#8	ACCEPTED	0.00 s	1, 2, 4, 6	details
#9	ACCEPTED	0.00 s	1, 3, 4, 5, 6	details
#10	ACCEPTED	0.00 s	1, 4, 5, 6	details
#11	ACCEPTED	0.00 s	1, 4, 6	details
#12	ACCEPTED	0.00 s	1, 4, 6	details
#13	ACCEPTED	0.00 s	1, 4, 6	details
#14	WRONG ANSWER	0.00 s	1, 6	details
#15	WRONG ANSWER	0.00 s	1, 2, 6	details
#16	ACCEPTED	0.00 s	4, 6	details
#17	ACCEPTED	0.00 s	4, 6	details
#18	ACCEPTED	0.00 s	3, 4, 5, 6	details
#19	WRONG ANSWER	0.00 s	4, 5, 6	details
#20	WRONG ANSWER	0.00 s	4, 5, 6	details
#21	WRONG ANSWER	0.00 s	5, 6	details
#22	WRONG ANSWER	0.00 s	5, 6	details
#23	WRONG ANSWER	0.00 s	2, 6	details
#24	ACCEPTED	0.00 s	3, 4, 5, 6	details
#25	WRONG ANSWER	0.00 s	4, 5, 6	details
#26	WRONG ANSWER	0.00 s	4, 5, 6	details
#27	WRONG ANSWER	0.00 s	5, 6	details
#28	WRONG ANSWER	0.00 s	5, 6	details
#29	WRONG ANSWER	0.00 s	2, 6	details
#30	ACCEPTED	0.00 s	3, 4, 5, 6	details
#31	ACCEPTED	0.00 s	4, 5, 6	details
#32	ACCEPTED	0.00 s	4, 5, 6	details
#33	WRONG ANSWER	0.00 s	4, 5, 6	details
#34	WRONG ANSWER	0.00 s	5, 6	details
#35	WRONG ANSWER	0.00 s	5, 6	details
#36	WRONG ANSWER	0.00 s	5, 6	details
#37	WRONG ANSWER	0.00 s	6	details
#38	WRONG ANSWER	0.00 s	6	details
#39	WRONG ANSWER	0.00 s	2, 6	details
#40	WRONG ANSWER	0.00 s	6	details
#41	WRONG ANSWER	0.00 s	6	details
#42	WRONG ANSWER	0.00 s	6	details
#43	WRONG ANSWER	0.00 s	6	details
#44	WRONG ANSWER	0.00 s	6	details

Compiler report

input/code.cpp: In function 'bool asdd(long long int, long long int, std::vector<std::pair<long long int, long long int> >&)':
input/code.cpp:11:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   11 |     for(int k=0;k<x.size();k++)
      |                 ~^~~~~~~~~
input/code.cpp: In function 'bool asddd(long long int, long long int, std::vector<std::pair<long long int, long long int> >&)':
input/code.cpp:25:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |     for(int k=0;k<x.size();k++)
      |                 ~^~~~~~~~~
input/code.cpp:24:9: warning: unused variable 'c' [-Wunused-variable]
   24 |     int c=0;
      |         ^
input/code.cpp: In function 'int32_t main()':...

Code

#include <bits/stdc++.h>
#define int long long 
#define endl " \n"
#define vec vector 
#define all(x) x.begin(),x.end()
#pragma GCC optimize("O2,unroll-loops")
using namespace std;
bool asdd(int i,int j,vec<pair<int,int>> &x)
{
    int c=0;
    for(int k=0;k<x.size();k++)
    {
        if(floorl(sqrtl((long double)(x[k].first-i)*(x[k].first-i)+(x[k].second-j)*(x[k].second-j)))==ceill(sqrtl((long double)(x[k].first-i)*(x[k].first-i)+(x[k].second-j)*(x[k].second-j))))
        {
            c++;
        }
    }
    if(c>1)
    return 1;else
    return 0;
}
bool asddd(int i,int j,vec<pair<int,int>> &x)
{
    int c=0;
    for(int k=0;k<x.size();k++)
    {
        if(floorl(sqrtl((long double)(x[k].first-i)*(x[k].first-i)+(x[k].second-j)*(x[k].second-j)))==ceill(sqrtl((long double)(x[k].first-i)*(x[k].first-i)+(x[k].second-j)*(x[k].second-j))))
        {
            return 1;
        }
    }
    return 0;
}
int32_t main()
{
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
    int n,k;
    cin>>n>>k;int prk=k;
    if(k<=n)
    {
        int i=0,j=0,c=0;
        vec<pair<int,int>> vs;
        if(k==n){cout<<0<<" "<<-1<<endl[1];k-=2;n-=2;vs.push_back({0,-1});}
        cout<<0<<" "<<0<<endl[1];
        vs.push_back({0,0});
        j=1;
        int cc=1;
        while(c<k)
        {
            c++;
            cout<<i<<" "<<j<<endl[1];
            vs.push_back({i,j});
            while(asdd(i,j,vs)){
            if(((cc++)&1))i+=uniform_int_distribution<int>(1,1000)(rng);else
            j+=uniform_int_distribution<int>(1,1000)(rng);
            }
        }
        i=max(i,j),j=max(i,j);i++;j++;
        while(c<n-1)
        {
            c++;
            while(asddd(i,j,vs)){
                i+=uniform_int_distribution<int>(1,1000)(rng);j+=uniform_int_distribution<int>(1,1000)(rng);
            }
            cout<<i<<" "<<j<<endl[1];
            vs.push_back({i,j});
        }
    }
    return 0;
}

Test details

Test 1

Subtask: 1, 4, 6

Verdict: ACCEPTED

input
`3 2` view save

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

user output
`0 0 0 1 491 1` 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 0` 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
`0 0 2 2` view save

Test 4

Subtask: 1, 2, 4, 6

Verdict: ACCEPTED

input
`2 1` view save

correct output
`1 0 2 0` view save

user output
`0 0 0 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
`0 0 2 2 437 363` view save

Test 6

Subtask: 1, 4, 6

Verdict: ACCEPTED

input
`3 1` view save

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

user output
`0 0 0 1 546 546` view save

Test 7

Subtask: 1, 4, 6

Verdict: ACCEPTED

input
`3 2` view save

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

user output
`0 0 0 1 187 1` view save

Test 8

Subtask: 1, 2, 4, 6

Verdict: ACCEPTED

input
`3 3` view save

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

user output
`0 -1 0 0 0 1` 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
`0 0 2 2 545 77 1145 244` view save

Test 10

Subtask: 1, 4, 5, 6

Verdict: ACCEPTED

input
`4 1` view save

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

user output
`0 0 0 1 780 780 1671 1067` view save

Test 11

Subtask: 1, 4, 6

Verdict: ACCEPTED

input
`4 2` view save

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

user output
`0 0 0 1 938 1 939 939` view save

Test 12

Subtask: 1, 4, 6

Verdict: ACCEPTED

input
`4 3` view save

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

user output
`0 0 0 1 42 1 42 308` view save

Test 13

Subtask: 1, 4, 6

Verdict: ACCEPTED

input
`4 4` view save

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

user output
`0 -1 0 0 0 1 455 1` 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
(empty)

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
(empty)

Test 16

Subtask: 4, 6

Verdict: ACCEPTED

input
`5 5` view save

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

user output
`0 -1 0 0 0 1 900 1 900 591` view save

Test 17

Subtask: 4, 6

Verdict: ACCEPTED

input
`6 5` view save

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

user output
`0 0 0 1 469 1 469 32 1090 32 ...` 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
`0 0 2 2 159 654 185 1182 878 1956 ...` 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
`0 0 0 1 2 1 2 144 285 144 ...` 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
`0 -1 0 0 0 1 1 1 1 70 ...` 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
(empty)

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
(empty)

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
(empty)

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
`0 0 2 2 679 718 1362 1205 2270 1861 ...` 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
`0 0 0 1 433 1 433 407 438 407 ...` 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
`0 -1 0 0 0 1 497 1 497 504 ...` 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
(empty)

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
(empty)

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
(empty)

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
`0 0 2 2 697 465 890 666 1060 1483 ...` view save

Test 31

Subtask: 4, 5, 6

Verdict: ACCEPTED

input
`100 1` view save

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

user output
`0 0 0 1 136 136 803 264 1337 352 ...` view save

Test 32

Subtask: 4, 5, 6

Verdict: ACCEPTED

input
`100 5` view save

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

user output
`0 0 0 1 1000 1 1000 764 1744 764 ...` 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
`0 -1 0 0 0 1 510 1 510 806 ...` 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
(empty)

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
(empty)

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
(empty)

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
(empty)

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
(empty)

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
(empty)

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
(empty)

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
(empty)

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
(empty)

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
(empty)

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
(empty)

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 (Juan_Alejandro)