CSES - Datatähti 2025 loppu

Submission details
Task:	Piiri
Sender:	MikaelM
Submission time:	2026-07-12 17:07:39 +0300
Language:	C++ (C++17)
Status:	READY
Result:	26

Feedback
subtask	verdict	score
#1	WRONG ANSWER	0
#2	WRONG ANSWER	0
#3	ACCEPTED	26
#4	WRONG ANSWER	0

Test results
test	verdict	time	subtask
#1	WRONG ANSWER	0.01 s	1, 2, 4	details
#2	WRONG ANSWER	0.01 s	1, 2, 4	details
#3	WRONG ANSWER	0.01 s	1, 2, 4	details
#4	ACCEPTED	0.01 s	1, 2, 4	details
#5	WRONG ANSWER	0.01 s	1, 2, 4	details
#6	WRONG ANSWER	0.01 s	1, 2, 4	details
#7	ACCEPTED	0.01 s	1, 2, 4	details
#8	WRONG ANSWER	0.01 s	1, 2, 4	details
#9	WRONG ANSWER	0.01 s	1, 2, 4	details
#10	WRONG ANSWER	0.01 s	2, 4	details
#11	WRONG ANSWER	0.01 s	2, 4	details
#12	WRONG ANSWER	0.01 s	2, 4	details
#13	WRONG ANSWER	0.01 s	2, 4	details
#14	WRONG ANSWER	0.01 s	2, 4	details
#15	WRONG ANSWER	0.01 s	2, 4	details
#16	WRONG ANSWER	0.01 s	2, 4	details
#17	ACCEPTED	0.04 s	3	details
#18	ACCEPTED	0.04 s	3	details
#19	ACCEPTED	0.04 s	3	details
#20	ACCEPTED	0.07 s	3	details
#21	ACCEPTED	0.01 s	3	details
#22	WRONG ANSWER	0.07 s	4	details
#23	WRONG ANSWER	0.06 s	4	details
#24	WRONG ANSWER	0.07 s	4	details
#25	WRONG ANSWER	0.07 s	4	details
#26	ACCEPTED	0.03 s	4	details
#27	WRONG ANSWER	0.07 s	4	details
#28	WRONG ANSWER	0.07 s	4	details

Code

#include<bits/stdc++.h>
using namespace std;
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
#define fi first
#define se second
#define pii pair<int,int>
using ll = long long;

string qry(string x) {
    cout << "? " << x << endl;
    string res;
    cin >> res;
    return res;
}

void solve() {
    
    // n=m+1
    
    int n, m;
    cin >> n >> m;

    string curr = "";
    for (int i = 0; i < n; i++) curr += '0';
    curr[0] = '1';

    string prv = qry(curr);
    for (int i = 1; i < n; i++) {
        curr[i] = '1';
        string u = qry(curr);
        if (u == prv) {
            cout << "YES\n" << curr << "\n";
            curr[i] = '0';
            cout << curr << "\n";
            return;
        }
        prv = u;
    }

}

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int t = 1;
    // cin >> t;
    while (t--) solve();
    return 0;
}

Test details

Test 1

Subtask: 1, 2, 4

Verdict: WRONG ANSWER

input
`2 2 NO 1 2` view save

correct output
(empty)

user output
`2 2 ? 10 10 ? 11 11` view save

Test 2

Subtask: 1, 2, 4

Verdict: WRONG ANSWER

input
`2 2 YES 1 2 conj 2 1 1` view save

correct output
(empty)

user output
`2 2 ? 10 10 ? 11 11` view save

Test 3

Subtask: 1, 2, 4

Verdict: WRONG ANSWER

input
`10 10 NO 6 2 1 8 3 9 4 10 5 7` view save

correct output
(empty)

user output
`10 10 ? 1000000000 0010000000 ? 1100000000 0110000000 ...` view save

Test 4

Subtask: 1, 2, 4

Verdict: ACCEPTED

input
`10 10 YES 6 10 2 3 9 8 4 5 7 1 disj 2 2 7 3` view save

correct output
(empty)

user output
`10 10 ? 1000000000 0000000001 ? 1100000000 0010000001 ...` view save

Test 5

Subtask: 1, 2, 4

Verdict: WRONG ANSWER

input
`10 10 YES 8 4 9 10 6 3 7 2 1 5 disj 1 5 2 9 1 4 3` view save

correct output
(empty)

user output
`10 10 ? 1000000000 0000000010 ? 1100000000 0000000110 ...` view save

Test 6

Subtask: 1, 2, 4

Verdict: WRONG ANSWER

input
`10 10 YES 8 6 2 4 10 5 7 9 1 3 disj 9 8 3 6 2 10 8 7 9 5` view save

correct output
(empty)

user output
`10 10 ? 1000000000 0000000010 ? 1100000000 0010000010 ...` view save

Test 7

Subtask: 1, 2, 4

Verdict: ACCEPTED

input
`10 10 YES 1 2 3 5 8 6 4 9 10 7 conj 4 2 8 10` view save

correct output
(empty)

user output
`10 10 ? 1000000000 1000000000 ? 1100000000 1100000000 ...` view save

Test 8

Subtask: 1, 2, 4

Verdict: WRONG ANSWER

input
`10 10 YES 9 8 3 2 10 6 1 4 5 7 conj 2 5 3 1 2 7 4` view save

correct output
(empty)

user output
`10 10 ? 1000000000 0000001000 ? 1100000000 0001001000 ...` view save

Test 9

Subtask: 1, 2, 4

Verdict: WRONG ANSWER

input
`10 10 YES 7 1 5 8 9 4 3 6 2 10 conj 4 8 9 6 3 5 1 10 7 4` view save

correct output
(empty)

user output
`10 10 ? 1000000000 0100000000 ? 1100000000 0100000010 ...` view save

Test 10

Subtask: 2, 4

Verdict: WRONG ANSWER

input
`30 30 NO 17 30 6 20 28 16 7 4 14 25 18 ...` view save

correct output
(empty)

user output
`30 30 ? 1000000000000000000000000000...` view save

Test 11

Subtask: 2, 4

Verdict: WRONG ANSWER

input
`30 30 YES 13 22 6 23 16 20 9 30 8 18 2 1...` view save

correct output
(empty)

user output
`30 30 ? 1000000000000000000000000000...` view save

Test 12

Subtask: 2, 4

Verdict: WRONG ANSWER

input
`30 30 YES 12 30 22 9 3 7 27 21 2 28 10 1...` view save

correct output
(empty)

user output
`30 30 ? 1000000000000000000000000000...` view save

Test 13

Subtask: 2, 4

Verdict: WRONG ANSWER

input
`30 30 YES 4 7 27 17 26 24 9 20 19 22 10 ...` view save

correct output
(empty)

user output
`30 30 ? 1000000000000000000000000000...` view save

Test 14

Subtask: 2, 4

Verdict: WRONG ANSWER

input
`30 30 YES 7 2 24 11 4 30 17 6 9 29 5 22 ...` view save

correct output
(empty)

user output
`30 30 ? 1000000000000000000000000000...` view save

Test 15

Subtask: 2, 4

Verdict: WRONG ANSWER

input
`30 30 YES 8 12 21 26 3 23 17 4 5 6 22 16...` view save

correct output
(empty)

user output
`30 30 ? 1000000000000000000000000000...` view save

Test 16

Subtask: 2, 4

Verdict: WRONG ANSWER

input
`30 30 YES 8 20 19 21 24 23 25 28 5 10 13...` view save

correct output
(empty)

user output
`30 30 ? 1000000000000000000000000000...` view save

Test 17

Subtask: 3

Verdict: ACCEPTED

input
`1000 999 YES 122 260 455 752 587 951 433 81...` view save

correct output
(empty)

user output
`1000 999 ? 1000000000000000000000000000...` view save

Test 18

Subtask: 3

Verdict: ACCEPTED

input
`1000 999 YES 593 999 981 107 187 851 19 574...` view save

correct output
(empty)

user output
`1000 999 ? 1000000000000000000000000000...` view save

Test 19

Subtask: 3

Verdict: ACCEPTED

input
`1000 999 YES 99 213 558 569 343 613 593 85 ...` view save

correct output
(empty)

user output
`1000 999 ? 1000000000000000000000000000...` view save

Test 20

Subtask: 3

Verdict: ACCEPTED

input
`1000 999 YES 60 15 857 450 862 173 675 384 ...` view save

correct output
(empty)

user output
`1000 999 ? 1000000000000000000000000000...` view save

Test 21

Subtask: 3

Verdict: ACCEPTED

input
`3 2 YES 3 1 disj 1 2 2 1` view save

correct output
(empty)

user output
`3 2 ? 100 01 ? 110 11 ...` view save

Test 22

Subtask: 4

Verdict: WRONG ANSWER

input
`1000 1000 NO 493 409 829 533 156 443 530 80...` view save

correct output
(empty)

user output
`1000 1000 ? 1000000000000000000000000000...` view save

Test 23

Subtask: 4

Verdict: WRONG ANSWER

input
`1000 1000 YES 16 450 665 56 968 1 984 545 90...` view save

correct output
(empty)

user output
`1000 1000 ? 1000000000000000000000000000...` view save

Test 24

Subtask: 4

Verdict: WRONG ANSWER

input
`1000 1000 YES 503 289 147 513 833 468 199 82...` view save

correct output
(empty)

user output
`1000 1000 ? 1000000000000000000000000000...` view save

Test 25

Subtask: 4

Verdict: WRONG ANSWER

input
`1000 1000 YES 294 617 164 497 46 961 234 12 ...` view save

correct output
(empty)

user output
`1000 1000 ? 1000000000000000000000000000...` view save

Test 26

Subtask: 4

Verdict: ACCEPTED

input
`1000 1000 YES 465 496 15 263 713 784 337 487...` view save

correct output
(empty)

user output
`1000 1000 ? 1000000000000000000000000000...` view save

Test 27

Subtask: 4

Verdict: WRONG ANSWER

input
`1000 1000 YES 788 567 826 731 874 95 502 20 ...` view save

correct output
(empty)

user output
`1000 1000 ? 1000000000000000000000000000...` view save

Test 28

Subtask: 4

Verdict: WRONG ANSWER

input
`1000 1000 YES 611 543 496 586 262 765 461 83...` view save

correct output
(empty)

user output
`1000 1000 ? 1000000000000000000000000000...` view save

Datatähti 2025 loppu

Piiri

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

Tasks

Submissions (MikaelM)