CSES - Aalto Competitive Programming 2024 - wk6 - Wed - Results
Submission details
Task:Fence
Sender:aalto2024g_004
Submission time:2024-10-09 16:44:43 +0300
Language:C++ (C++11)
Status:READY
Result:ACCEPTED
Test results
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Code

#include <iostream>
#include <vector>
#include <algorithm>

using namespace std;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    int n, k;
    cin >> n >> k;

    vector<int> planks(2 * n);
    for (int i = 0; i < 2 * n; ++i) {
        cin >> planks[i];
    }

    sort(planks.begin(), planks.end());

    int l = 0, r = 2 * n - 1;
    int total = 0;

    while (l < r && total < n) {
        if (planks[l] + planks[r] >= k) {
            total++;
            l++;
            r--;
        } else {
            r--;
        }
    }

    if (total >= n) {
        cout << "Yes" << endl;
    } else {
        cout << "No" << endl;
    }

    return 0;
}

Test details

Test 1

Verdict: ACCEPTED

input
1 8
3 5 

correct output
Yes

user output
Yes

Test 2

Verdict: ACCEPTED

input
1 9
3 4 

correct output
No

user output
No

Test 3

Verdict: ACCEPTED

input
2 3
2 1 2 1 

correct output
Yes

user output
Yes

Test 4

Verdict: ACCEPTED

input
2 3
2 1 1 2 

correct output
Yes

user output
Yes

Test 5

Verdict: ACCEPTED

input
3 5
3 2 2 3 2 3 

correct output
Yes

user output
Yes

Test 6

Verdict: ACCEPTED

input
3 8
3 5 3 5 2 6 

correct output
Yes

user output
Yes

Test 7

Verdict: ACCEPTED

input
3 4
3 1 1 3 2 2 

correct output
Yes

user output
Yes

Test 8

Verdict: ACCEPTED

input
4 2
1 1 1 1 1 1 1 1 

correct output
Yes

user output
Yes

Test 9

Verdict: ACCEPTED

input
4 8
1 7 2 6 7 1 2 6 

correct output
Yes

user output
Yes

Test 10

Verdict: ACCEPTED

input
4 2
1 1 1 1 1 1 1 1 

correct output
Yes

user output
Yes

Test 11

Verdict: ACCEPTED

input
4 2
1 1 1 1 1 1 1 1 

correct output
Yes

user output
Yes

Test 12

Verdict: ACCEPTED

input
4 8
5 2 6 2 2 6 4 3 

correct output
No

user output
No

Test 13

Verdict: ACCEPTED

input
5 6
4 2 5 1 4 2 5 1 5 3 

correct output
Yes

user output
Yes

Test 14

Verdict: ACCEPTED

input
5 5
3 2 4 1 1 4 1 4 2 3 

correct output
Yes

user output
Yes

Test 15

Verdict: ACCEPTED

input
5 5
1 4 3 4 2 2 2 2 2 1 

correct output
No

user output
No

Test 16

Verdict: ACCEPTED

input
5 6
4 5 2 1 3 3 5 3 5 1 

correct output
Yes

user output
Yes

Test 17

Verdict: ACCEPTED

input
5 10
5 5 2 8 9 1 8 2 7 3 

correct output
Yes

user output
Yes

Test 18

Verdict: ACCEPTED

input
5 3
2 2 1 1 2 2 1 1 2 1 

correct output
Yes

user output
Yes

Test 19

Verdict: ACCEPTED

input
5 10
3 7 2 8 8 2 1 9 1 9 

correct output
Yes

user output
Yes

Test 20

Verdict: ACCEPTED

input
5 2
1 1 1 1 1 1 1 1 1 1 

correct output
Yes

user output
Yes

Test 21

Verdict: ACCEPTED

input
5 9
8 2 7 4 5 7 2 4 1 5 

correct output
Yes

user output
Yes

Test 22

Verdict: ACCEPTED

input
5 2
1 1 1 1 1 1 1 1 1 1 

correct output
Yes

user output
Yes

Test 23

Verdict: ACCEPTED

input
10 6
4 2 5 1 4 2 5 1 5 3 4 2 4 2 2 ...

correct output
Yes

user output
Yes

Test 24

Verdict: ACCEPTED

input
10 5
3 2 4 1 1 4 1 4 2 3 4 1 1 4 1 ...

correct output
Yes

user output
Yes

Test 25

Verdict: ACCEPTED

input
10 5
1 4 3 4 2 2 2 2 2 1 1 3 3 1 2 ...

correct output
No

user output
No

Test 26

Verdict: ACCEPTED

input
10 6
4 5 2 1 3 3 5 3 5 1 1 1 2 2 1 ...

correct output
No

user output
No

Test 27

Verdict: ACCEPTED

input
10 10
5 5 2 8 9 1 8 2 7 3 6 4 7 3 6 ...

correct output
Yes

user output
Yes

Test 28

Verdict: ACCEPTED

input
10 3
2 2 1 1 2 2 1 1 2 1 2 1 2 1 1 ...

correct output
Yes

user output
Yes

Test 29

Verdict: ACCEPTED

input
10 10
3 7 2 8 8 2 1 9 1 9 4 6 1 9 9 ...

correct output
Yes

user output
Yes

Test 30

Verdict: ACCEPTED

input
10 2
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...

correct output
Yes

user output
Yes

Test 31

Verdict: ACCEPTED

input
10 9
8 2 7 4 5 7 2 4 1 5 4 7 4 4 5 ...

correct output
Yes

user output
Yes

Test 32

Verdict: ACCEPTED

input
10 2
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...

correct output
Yes

user output
Yes

Test 33

Verdict: ACCEPTED

input
100 54882
39253 15632 47086 7798 23252 3...

correct output
No

user output
No

Test 34

Verdict: ACCEPTED

input
100 41703
30040 11663 38890 2813 5 41698...

correct output
Yes

user output
Yes

Test 35

Verdict: ACCEPTED

input
100 43601
1131 40616 23966 41322 18981 2...

correct output
No

user output
No

Test 36

Verdict: ACCEPTED

input
100 55081
39006 46265 16024 6683 28137 3...

correct output
No

user output
No

Test 37

Verdict: ACCEPTED

input
100 96704
52920 43784 16701 80003 94062 ...

correct output
Yes

user output
Yes

Test 38

Verdict: ACCEPTED

input
100 22201
19331 18456 4590 8076 20394 21...

correct output
No

user output
No

Test 39

Verdict: ACCEPTED

input
100 89287
29642 59645 18698 70589 73325 ...

correct output
Yes

user output
Yes

Test 40

Verdict: ACCEPTED

input
100 7632
5952 2435 3346 7465 5521 3477 ...

correct output
No

user output
No

Test 41

Verdict: ACCEPTED

input
100 87344
84597 20914 75919 32974 46368 ...

correct output
No

user output
No

Test 42

Verdict: ACCEPTED

input
100 1039
521 518 6 1030 146 890 911 126...

correct output
No

user output
No

Test 43

Verdict: ACCEPTED

input
200 54882
39253 15632 47086 7798 23252 3...

correct output
No

user output
No

Test 44

Verdict: ACCEPTED

input
200 41703
30040 11663 38890 2813 5 41698...

correct output
Yes

user output
Yes

Test 45

Verdict: ACCEPTED

input
200 43601
1131 40616 23966 41322 18981 2...

correct output
No

user output
No

Test 46

Verdict: ACCEPTED

input
200 55081
39006 46265 16024 6683 28137 3...

correct output
No

user output
No

Test 47

Verdict: ACCEPTED

input
200 96704
52920 43784 16701 80003 94062 ...

correct output
Yes

user output
Yes

Test 48

Verdict: ACCEPTED

input
200 22201
19331 18456 4590 8076 20394 21...

correct output
No

user output
No

Test 49

Verdict: ACCEPTED

input
200 89287
29642 59645 18698 70589 73325 ...

correct output
Yes

user output
Yes

Test 50

Verdict: ACCEPTED

input
200 7632
5952 2435 3346 7465 5521 3477 ...

correct output
No

user output
No

Test 51

Verdict: ACCEPTED

input
200 87344
84597 20914 75919 32974 46368 ...

correct output
No

user output
No

Test 52

Verdict: ACCEPTED

input
200 1039
521 518 6 1030 146 890 911 126...

correct output
No

user output
No

Test 53

Verdict: ACCEPTED

input
1000 54882
39253 15632 47086 7798 23252 3...

correct output
No

user output
No

Test 54

Verdict: ACCEPTED

input
1000 41703
30040 11663 38890 2813 5 41698...

correct output
Yes

user output
Yes

Test 55

Verdict: ACCEPTED

input
1000 43601
1131 40616 23966 41322 18981 2...

correct output
No

user output
No

Test 56

Verdict: ACCEPTED

input
1000 55081
39006 46265 16024 6683 28137 3...

correct output
No

user output
No

Test 57

Verdict: ACCEPTED

input
1000 96704
52920 43784 16701 80003 94062 ...

correct output
Yes

user output
Yes

Test 58

Verdict: ACCEPTED

input
1000 22201
19331 18456 4590 8076 20394 21...

correct output
No

user output
No

Test 59

Verdict: ACCEPTED

input
1000 89287
29642 59645 18698 70589 73325 ...

correct output
Yes

user output
Yes

Test 60

Verdict: ACCEPTED

input
1000 7632
5952 2435 3346 7465 5521 3477 ...

correct output
No

user output
No

Test 61

Verdict: ACCEPTED

input
1000 87344
84597 20914 75919 32974 46368 ...

correct output
No

user output
No

Test 62

Verdict: ACCEPTED

input
1000 1039
521 518 6 1030 146 890 911 126...

correct output
No

user output
No

Test 63

Verdict: ACCEPTED

input
100000 54882
39253 15632 47086 7798 23252 3...

correct output
No

user output
No

Test 64

Verdict: ACCEPTED

input
100000 41703
30040 11663 38890 2813 5 41698...

correct output
Yes

user output
Yes

Test 65

Verdict: ACCEPTED

input
100000 43601
1131 40616 23966 41322 18981 2...

correct output
No

user output
No

Test 66

Verdict: ACCEPTED

input
100000 55081
39006 46265 16024 6683 28137 3...

correct output
No

user output
No

Test 67

Verdict: ACCEPTED

input
100000 96704
52920 43784 16701 80003 94062 ...

correct output
Yes

user output
Yes

Test 68

Verdict: ACCEPTED

input
100000 22201
19331 18456 4590 8076 20394 21...

correct output
No

user output
No

Test 69

Verdict: ACCEPTED

input
100000 89287
29642 59645 18698 70589 73325 ...

correct output
Yes

user output
Yes

Test 70

Verdict: ACCEPTED

input
100000 7632
5952 2435 3346 7465 5521 3477 ...

correct output
No

user output
No

Test 71

Verdict: ACCEPTED

input
100000 87344
84597 20914 75919 32974 46368 ...

correct output
No

user output
No

Test 72

Verdict: ACCEPTED

input
100000 1039
521 518 6 1030 146 890 911 126...

correct output
No

user output
No