CSES - Aalto Competitive Programming 2024 - wk9 - Mon - Results
Submission details
Task:Chess board tour
Sender:minghao
Submission time:2024-11-04 17:26:24 +0200
Language:C++ (C++20)
Status:READY
Result:
Test results
testverdicttime
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Compiler report

input/code.cpp: In function 'void Test()':
input/code.cpp:8:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    8 |     freopen("temp\\in.txt", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

Code

#include<bits/stdc++.h>
using namespace std;
typedef long long LL;
const int N=10005;

void Test()
{
    freopen("temp\\in.txt", "r", stdin);
}

string ans;
void PushBack(char c, int n)
{
    for(int i=1; i<=n; i++)
        ans.push_back(c);
}

int main()
{
    // Test();
    int n, m;
    cin >> n >> m;
    
    if(n % 2 == 0) {
        PushBack('D', n);
        PushBack('R', m-1);
        
        int num = (n - 2)/2;
        if(m == 2) {
            PushBack('U', n-1);
        } else {
            while(num--)
            {
                PushBack('U', 1);
                PushBack('L', m-1);
                PushBack('U', 1);
                PushBack('R', m-1);
            }
        }

        PushBack('U', 1);
        PushBack('L', m-1);
    } else if(m % 2 == 0) {
        PushBack('D', n);
        
        int num = (m - 2)/2;
        while(num--)
        {
            PushBack('R', 1);
            PushBack('U', n-1);
            PushBack('R', 1);
            PushBack('D', n-1);
        }

        PushBack('R', 1);
        PushBack('U', n);
        PushBack('L', m-1);
    } else {
        ans = "-1";
    }
    cout << ans;
    return 0;
}

Test details

Test 1

Verdict:

input
2 2

correct output
DRUL

user output
DDRUUL

Test 2

Verdict:

input
2 2

correct output
DRUL

user output
DDRUUL

Test 3

Verdict:

input
2 3

correct output
RRDLLU

user output
DDRRULL

Test 4

Verdict:

input
2 2

correct output
DRUL

user output
DDRUUL

Test 5

Verdict:

input
4 4

correct output
DDDRUURDDRUUULLL

user output
DDDDRRRULLLURRRULLL

Test 6

Verdict: ACCEPTED

input
3 3

correct output
-1

user output
-1

Test 7

Verdict:

input
4 4

correct output
DDDRUURDDRUUULLL

user output
DDDDRRRULLLURRRULLL

Test 8

Verdict: ACCEPTED

input
3 5

correct output
-1

user output
-1

Test 9

Verdict:

input
3 2

correct output
DDRUUL

user output
DDDRUUUL

Test 10

Verdict:

input
4 2

correct output
DDDRUUUL

user output
DDDDRUUUUL

Test 11

Verdict: ACCEPTED

input
5 5

correct output
-1

user output
-1

Test 12

Verdict:

input
2 2

correct output
DRUL

user output
DDRUUL

Test 13

Verdict: ACCEPTED

input
5 5

correct output
-1

user output
-1

Test 14

Verdict:

input
2 2

correct output
DRUL

user output
DDRUUL

Test 15

Verdict:

input
5 2

correct output
DDDDRUUUUL

user output
DDDDDRUUUUUL

Test 16

Verdict:

input
2 3

correct output
RRDLLU

user output
DDRRULL

Test 17

Verdict:

input
6 7

correct output
RRRRRRDLLLLLDRRRRRDLLLLLDRRRRR...

user output
DDDDDDRRRRRRULLLLLLURRRRRRULLL...

Test 18

Verdict:

input
5 10

correct output
DDDDRUUURDDDRUUURDDDRUUURDDDRU...

user output
DDDDDRUUUURDDDDRUUUURDDDDRUUUU...

Test 19

Verdict: ACCEPTED

input
5 3

correct output
-1

user output
-1

Test 20

Verdict:

input
6 2

correct output
DDDDDRUUUUUL

user output
DDDDDDRUUUUUUL

Test 21

Verdict:

input
10 10

correct output
DDDDDDDDDRUUUUUUUURDDDDDDDDRUU...

user output
DDDDDDDDDDRRRRRRRRRULLLLLLLLLU...
Truncated

Test 22

Verdict:

input
3 2

correct output
DDRUUL

user output
DDDRUUUL

Test 23

Verdict:

input
10 10

correct output
DDDDDDDDDRUUUUUUUURDDDDDDDDRUU...

user output
DDDDDDDDDDRRRRRRRRRULLLLLLLLLU...
Truncated

Test 24

Verdict:

input
2 4

correct output
DRRRULLL

user output
DDRRRULLL

Test 25

Verdict:

input
9 2

correct output
DDDDDDDDRUUUUUUUUL

user output
DDDDDDDDDRUUUUUUUUUL

Test 26

Verdict:

input
2 5

correct output
RRRRDLLLLU

user output
DDRRRRULLLL

Test 27

Verdict:

input
56 60

correct output
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDD...

user output
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDD...
Truncated

Test 28

Verdict:

input
43 100

correct output
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDD...

user output
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDD...
Truncated

Test 29

Verdict:

input
45 20

correct output
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDD...

user output
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDD...
Truncated

Test 30

Verdict:

input
56 9

correct output
RRRRRRRRDLLLLLLLDRRRRRRRDLLLLL...

user output
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDD...
Truncated

Test 31

Verdict: ACCEPTED

input
97 91

correct output
-1

user output
-1

Test 32

Verdict: ACCEPTED

input
23 7

correct output
-1

user output
-1

Test 33

Verdict:

input
90 95

correct output
RRRRRRRRRRRRRRRRRRRRRRRRRRRRRR...

user output
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDD...
Truncated

Test 34

Verdict:

input
9 24

correct output
DDDDDDDDRUUUUUUURDDDDDDDRUUUUU...

user output
DDDDDDDDDRUUUUUUUURDDDDDDDDRUU...
Truncated

Test 35

Verdict:

input
88 3

correct output
RRDLDRDLDRDLDRDLDRDLDRDLDRDLDR...

user output
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDD...
Truncated

Test 36

Verdict:

input
3 38

correct output
DDRURDRURDRURDRURDRURDRURDRURD...

user output
DDDRUURDDRUURDDRUURDDRUURDDRUU...
Truncated

Test 37

Verdict: ACCEPTED

input
111 119

correct output
-1

user output
-1

Test 38

Verdict:

input
84 200

correct output
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDD...

user output
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDD...
Truncated

Test 39

Verdict:

input
88 38

correct output
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDD...

user output
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDD...
Truncated

Test 40

Verdict:

input
111 16

correct output
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDD...

user output
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDD...
Truncated

Test 41

Verdict:

input
194 181

correct output
RRRRRRRRRRRRRRRRRRRRRRRRRRRRRR...

user output
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDD...
Truncated

Test 42

Verdict:

input
46 12

correct output
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDD...

user output
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDD...
Truncated

Test 43

Verdict:

input
179 190

correct output
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDD...

user output
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDD...
Truncated

Test 44

Verdict: ACCEPTED

input
17 47

correct output
-1

user output
-1

Test 45

Verdict:

input
175 4

correct output
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDD...

user output
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDD...
Truncated

Test 46

Verdict:

input
4 74

correct output
DDDRUURDDRUURDDRUURDDRUURDDRUU...

user output
DDDDRRRRRRRRRRRRRRRRRRRRRRRRRR...
Truncated

Test 47

Verdict:

input
550 594

correct output
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDD...

user output
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDD...
Truncated

Test 48

Verdict:

input
418 998

correct output
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDD...

user output
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDD...
Truncated

Test 49

Verdict:

input
437 186

correct output
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDD...

user output
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDD...
Truncated

Test 50

Verdict:

input
552 72

correct output
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDD...

user output
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDD...
Truncated

Test 51

Verdict:

input
968 901

correct output
RRRRRRRRRRRRRRRRRRRRRRRRRRRRRR...

user output
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDD...
Truncated

Test 52

Verdict: ACCEPTED

input
223 57

correct output
-1

user output
-1

Test 53

Verdict:

input
893 948

correct output
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDD...

user output
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDD...
Truncated

Test 54

Verdict:

input
78 229

correct output
RRRRRRRRRRRRRRRRRRRRRRRRRRRRRR...

user output
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDD...
Truncated

Test 55

Verdict:

input
874 13

correct output
RRRRRRRRRRRRDLLLLLLLLLLLDRRRRR...

user output
DDDDDDDDDDDDDDDDDDDDDDDDDDDDDD...
Truncated

Test 56

Verdict:

input
12 366

correct output
DDDDDDDDDDDRUUUUUUUUUURDDDDDDD...

user output
DDDDDDDDDDDDRRRRRRRRRRRRRRRRRR...
Truncated