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ID题目提交者结果用时内存语言文件大小提交时间测评时间
#295924#4997. Junk JourneyNemesis (Zonghan Yang, Mingchi Zhang, Jianjun Zhang) #AC ✓1ms3720kbC++201.2kb2024-01-01 15:39:422024-01-01 15:39:42

詳細信息

Test #1:

score: 100
Accepted
time: 0ms
memory: 3660kb

input:

50
10 11 23 0
9 18
20 19
8 15
10 19
18 25
11 1
16 12
28 15
12 12
12 14
19 22
15 8
4 9
25 16
9 2
1 14
30 13
26 22
24 14
9 21
18 26
20 6
17 21
12 17
3 28
8 0
6 15
11 16
12 28
23 14
12 7
14 29
23 3
29 18
17 14
13 2
0 22
16 11
6 18
13 27
2 3
21 12
23 30
12 22
16 6
6 29
2 20
30 22
29 5
4 13

output:

up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
right
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
left
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
...

result:

ok 

Test #2:

score: 0
Accepted
time: 1ms
memory: 3704kb

input:

1
0 0 2 0
1 0

output:

up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
right
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
left
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
do...

result:

ok 

Test #3:

score: 0
Accepted
time: 1ms
memory: 3720kb

input:

8
1 1 4 4
5 4
6 4
3 4
2 4
4 5
4 6
4 3
4 2

output:

up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
right
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
left
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
...

result:

ok 

Test #4:

score: 0
Accepted
time: 0ms
memory: 3640kb

input:

50
22 29 17 29
18 13
19 17
22 0
17 11
1 6
24 10
20 4
0 20
17 15
27 26
11 13
30 24
24 29
18 17
17 12
5 26
22 18
21 10
19 14
24 16
4 16
14 28
14 29
4 2
7 4
19 13
30 0
22 5
18 11
20 23
23 14
12 17
5 12
5 16
23 6
1 27
26 27
14 26
22 24
22 1
14 9
29 16
26 29
14 22
23 22
24 12
11 24
2 12
0 12
26 9

output:

up
up
up
right
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
left
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
up
left
left
left
left
l...

result:

ok 

Test #5:

score: 0
Accepted
time: 0ms
memory: 3636kb

input:

50
12 27 23 5
16 6
8 0
14 10
5 26
13 7
26 29
29 20
6 24
16 22
11 25
20 20
14 18
29 30
21 27
18 20
30 26
4 9
15 14
16 16
10 17
1 12
1 4
26 4
16 0
23 3
27 23
24 29
7 4
2 20
7 5
9 27
18 6
8 16
13 24
0 6
3 30
3 21
24 27
8 19
9 17
18 4
28 15
11 8
26 12
16 18
8 3
21 12
19 12
13 17
17 14

output:

up
up
up
up
up
right
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
left
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
up
left
left
left
...

result:

ok 

Test #6:

score: 0
Accepted
time: 1ms
memory: 3556kb

input:

50
11 8 27 11
16 27
23 27
16 10
27 9
28 14
0 27
1 11
26 12
9 9
30 23
24 18
28 25
29 29
21 4
7 8
2 21
3 5
20 6
28 22
20 25
6 10
20 4
19 10
2 27
24 0
30 5
30 10
19 8
15 30
16 9
18 1
18 17
17 11
24 29
29 18
9 15
26 17
11 5
13 15
28 24
21 27
19 12
13 28
11 17
1 8
0 13
7 0
27 18
17 10
18 10

output:

up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
right
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
left
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
d...

result:

ok 

Test #7:

score: 0
Accepted
time: 0ms
memory: 3716kb

input:

50
29 30 2 13
15 20
5 23
9 26
17 4
20 29
10 24
21 27
0 9
6 17
4 2
5 10
7 19
26 12
13 2
26 11
13 13
9 7
13 0
26 15
27 19
10 26
2 27
18 0
15 12
3 6
27 30
19 2
0 0
23 10
17 25
28 6
23 24
29 24
10 1
22 12
25 23
23 11
9 16
25 3
6 7
24 7
9 22
29 13
5 6
15 0
15 14
23 9
22 25
20 5
26 18

output:

up
up
right
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
left
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
up
left
left
left
left
left...

result:

ok 

Test #8:

score: 0
Accepted
time: 0ms
memory: 3640kb

input:

50
11 8 9 13
2 9
18 19
23 11
13 9
21 4
3 7
1 10
13 13
11 21
25 1
18 14
22 20
17 24
1 18
14 23
19 4
16 22
1 20
8 10
29 17
27 23
22 23
5 22
14 19
8 30
22 15
18 7
25 21
18 3
12 3
20 0
12 1
9 16
7 20
12 20
3 18
11 15
29 4
27 17
21 29
21 25
27 16
1 8
2 30
29 30
6 29
12 27
7 16
29 8
1 3

output:

up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
right
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
left
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
d...

result:

ok 

Test #9:

score: 0
Accepted
time: 1ms
memory: 3640kb

input:

50
8 28 24 29
30 14
10 12
25 18
23 23
21 30
16 4
2 24
16 23
22 22
24 5
14 8
5 23
17 16
27 22
5 28
1 10
24 6
0 30
14 9
29 20
20 14
27 10
20 2
10 23
28 26
0 9
3 5
21 4
6 6
18 8
28 8
29 22
17 8
14 16
27 20
1 16
24 3
14 5
7 26
28 0
3 11
14 7
25 17
30 20
12 12
24 14
22 7
0 3
23 16
15 29

output:

up
up
up
up
right
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
left
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
up
left
left
left
lef...

result:

ok 

Test #10:

score: 0
Accepted
time: 0ms
memory: 3580kb

input:

50
4 21 7 2
12 12
7 14
26 9
20 5
9 23
4 18
11 16
28 0
9 6
4 7
4 14
29 26
30 3
24 25
1 30
20 7
26 17
11 7
9 24
21 8
18 17
25 6
5 16
23 20
8 11
20 30
30 2
3 17
12 5
12 13
4 6
29 9
17 3
24 29
29 10
3 29
25 30
30 15
7 25
28 24
12 4
15 28
16 26
20 2
18 2
7 18
20 16
16 3
20 6
20 11

output:

up
up
up
up
up
up
up
up
up
up
up
right
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
left
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
...

result:

ok 

Test #11:

score: 0
Accepted
time: 1ms
memory: 3644kb

input:

50
2 28 30 13
14 11
24 14
7 30
27 29
3 27
25 0
14 14
1 23
15 6
18 20
13 26
13 3
29 20
21 15
0 14
24 13
23 2
0 24
27 7
16 29
20 28
13 21
10 19
22 1
9 27
15 14
26 24
16 10
24 16
17 19
7 20
27 16
1 11
30 16
14 3
6 24
26 16
19 3
28 18
4 12
10 6
20 15
30 30
2 19
5 10
28 17
17 25
29 2
29 13
20 14

output:

up
up
up
up
right
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
left
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
up
left
left
down
up
...

result:

ok 

Test #12:

score: 0
Accepted
time: 1ms
memory: 3664kb

input:

50
13 11 30 24
25 0
5 22
1 21
14 25
12 13
16 20
16 14
28 22
24 12
14 2
2 16
9 24
2 14
15 3
3 4
4 27
8 2
6 9
5 27
14 15
4 12
9 17
13 2
28 4
7 29
9 18
12 17
5 9
15 12
26 19
5 3
19 25
8 30
30 21
28 18
14 30
24 0
20 30
5 6
11 23
9 21
4 23
27 28
0 26
23 4
4 19
16 28
12 19
0 25
0 21

output:

up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
right
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
left
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
...

result:

ok 

Test #13:

score: 0
Accepted
time: 1ms
memory: 3640kb

input:

50
17 6 28 24
19 17
21 8
5 20
11 24
19 4
23 24
24 29
0 5
18 30
2 19
5 26
17 30
13 26
3 4
10 2
26 19
12 0
14 8
0 21
8 8
27 2
7 5
19 10
21 24
0 23
7 9
18 20
5 23
24 25
14 18
25 10
17 28
4 25
22 22
1 25
15 17
24 6
18 11
7 27
21 26
29 24
16 26
10 5
29 21
11 14
14 24
4 3
19 16
26 26
23 2

output:

up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
right
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
left
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
...

result:

ok 

Test #14:

score: 0
Accepted
time: 1ms
memory: 3632kb

input:

50
21 7 20 5
20 11
14 16
26 9
19 13
21 27
13 9
15 21
28 3
3 27
15 13
11 0
18 7
15 17
7 23
3 17
9 20
29 28
0 1
25 29
0 18
23 25
15 4
28 8
18 3
13 10
29 26
27 29
16 9
15 23
21 11
2 9
10 26
7 29
21 24
0 12
2 15
9 14
13 27
21 23
25 17
13 25
28 13
22 7
21 1
16 6
27 1
5 29
4 30
25 12
2 3

output:

up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
right
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
left
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
dow...

result:

ok 

Test #15:

score: 0
Accepted
time: 1ms
memory: 3664kb

input:

50
12 4 21 1
16 30
4 7
22 4
17 22
2 10
22 17
30 29
14 13
14 18
7 11
20 10
2 15
2 11
3 22
9 9
2 28
30 18
27 3
3 23
18 27
23 7
17 9
16 18
10 23
14 5
29 20
8 14
21 13
23 15
13 28
11 3
10 12
8 13
18 24
7 12
7 17
16 0
3 27
3 6
18 4
10 7
2 14
11 26
15 5
25 25
24 22
10 29
15 12
19 11
1 14

output:

up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
right
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
left
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down...

result:

ok 

Test #16:

score: 0
Accepted
time: 1ms
memory: 3664kb

input:

50
23 8 12 28
0 10
9 25
12 13
3 19
24 13
15 19
11 17
8 9
11 25
29 27
20 21
14 10
13 13
9 28
21 16
10 1
6 20
23 3
1 24
19 9
10 18
21 1
1 0
17 13
21 4
11 19
30 9
25 28
6 18
18 30
25 18
4 9
19 27
26 6
4 7
13 6
11 23
14 16
6 21
23 14
15 24
10 4
21 23
18 20
7 7
18 1
4 11
29 4
4 5
19 22

output:

up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
right
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
left
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
d...

result:

ok 

Test #17:

score: 0
Accepted
time: 0ms
memory: 3632kb

input:

50
14 30 20 13
23 29
4 7
7 11
2 29
10 20
21 1
10 7
9 21
1 16
3 7
24 26
3 29
22 14
13 26
4 23
18 30
17 5
9 11
16 23
26 17
1 0
24 29
23 18
16 14
13 24
6 5
25 23
12 25
25 30
1 24
18 28
19 2
13 29
12 20
15 22
16 4
25 6
1 19
0 18
13 14
19 17
7 24
1 21
27 18
4 13
4 30
3 5
22 12
7 10
21 6

output:

up
up
right
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
left
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
up
left
left
left
left
left...

result:

ok 

Test #18:

score: 0
Accepted
time: 1ms
memory: 3576kb

input:

50
23 26 22 8
13 28
5 25
23 18
22 27
24 6
2 28
3 9
17 18
8 20
29 21
6 3
30 27
29 16
28 29
29 20
1 19
16 14
25 0
27 20
26 2
15 12
7 19
30 17
0 4
15 19
10 17
2 20
3 11
25 24
30 5
3 5
25 6
4 1
30 25
4 24
8 22
26 7
4 7
8 4
19 1
19 25
4 27
28 10
16 1
22 14
27 5
11 23
2 30
11 10
13 0

output:

up
up
up
up
up
up
right
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
left
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
up
left
left
le...

result:

ok 

Test #19:

score: 0
Accepted
time: 0ms
memory: 3668kb

input:

50
5 25 7 12
30 8
6 11
21 16
9 23
9 16
1 29
15 5
22 22
30 30
25 9
13 16
13 11
30 17
25 26
9 25
2 10
5 30
19 12
28 24
2 20
3 7
28 5
17 6
1 6
20 2
13 28
14 8
0 25
8 23
22 30
18 4
10 23
1 2
2 6
30 24
17 28
16 20
10 8
18 21
8 5
12 21
5 1
11 27
27 12
23 28
19 21
1 4
4 20
10 19
4 10

output:

up
up
up
up
up
up
up
right
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
left
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
up
left
left...

result:

ok 

Test #20:

score: 0
Accepted
time: 1ms
memory: 3640kb

input:

50
26 6 5 22
7 29
17 2
24 29
23 18
16 14
18 0
1 29
17 28
28 15
21 18
19 21
2 15
3 7
17 14
15 10
27 28
12 20
22 27
0 16
18 3
20 29
24 3
12 29
7 1
18 7
4 18
26 5
22 2
13 28
0 17
22 9
28 12
1 2
10 21
16 11
7 15
27 6
15 17
9 17
0 23
13 13
30 26
3 11
11 29
23 13
2 4
18 30
23 10
20 26
15 8

output:

up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
right
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
left
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
...

result:

ok 

Test #21:

score: 0
Accepted
time: 1ms
memory: 3640kb

input:

50
28 0 13 8
0 15
5 9
20 2
24 28
14 4
26 3
26 27
17 13
27 5
14 16
23 25
1 28
19 14
7 20
18 25
24 18
4 11
0 14
9 2
1 9
16 5
30 4
15 11
14 14
20 8
1 14
11 7
28 9
4 9
8 15
30 26
2 7
0 22
8 11
28 5
3 13
23 23
13 18
25 27
29 5
25 3
26 10
8 12
30 22
1 7
13 29
20 18
2 30
5 6
19 16

output:

up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
right
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
left
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
do...

result:

ok 

Test #22:

score: 0
Accepted
time: 0ms
memory: 3584kb

input:

50
30 24 18 12
13 2
7 22
22 0
3 7
25 2
13 18
8 6
0 21
18 5
23 2
17 29
19 7
15 6
27 13
14 22
22 10
26 30
8 24
1 12
16 2
20 28
0 28
20 1
8 20
22 23
28 14
4 16
2 12
10 28
26 28
16 14
11 10
9 14
23 25
11 8
15 0
12 10
18 7
19 21
18 28
10 10
17 4
5 13
18 17
10 15
23 21
22 1
3 12
30 29
20 5

output:

up
up
up
up
up
up
up
up
right
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
left
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
up
left
l...

result:

ok 

Test #23:

score: 0
Accepted
time: 1ms
memory: 3660kb

input:

12
5 5 13 22
4 5
3 5
2 5
6 5
7 5
8 5
5 6
5 7
5 8
5 4
5 3
5 2

output:

up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
right
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
left
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
do...

result:

ok 

Test #24:

score: 0
Accepted
time: 1ms
memory: 3644kb

input:

36
15 15 15 16
0 0
0 1
0 2
1 0
1 1
1 2
2 0
2 1
2 2
28 28
28 29
28 30
29 28
29 29
29 30
30 28
30 29
30 30
0 28
0 29
0 30
1 28
1 29
1 30
2 28
2 29
2 30
28 0
28 1
28 2
29 0
29 1
29 2
30 0
30 1
30 2

output:

up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
right
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
left
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
do...

result:

ok 

Test #25:

score: 0
Accepted
time: 1ms
memory: 3584kb

input:

50
30 30 29 30
1 1
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
1 10
2 1
2 2
2 3
2 4
2 5
2 6
2 7
2 8
2 9
2 10
3 1
3 2
3 3
3 4
3 5
3 6
3 7
3 8
3 9
3 10
4 1
4 2
4 3
4 4
4 5
4 6
4 7
4 8
4 9
4 10
5 1
5 2
5 3
5 4
5 5
5 6
5 7
5 8
5 9
5 10

output:

up
up
right
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
left
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
up
left
left
left
left
left...

result:

ok 

Test #26:

score: 0
Accepted
time: 1ms
memory: 3704kb

input:

48
6 6 7 6
1 1
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
1 10
1 11
1 12
1 13
2 1
2 13
3 1
3 13
4 1
4 13
5 1
5 13
6 1
6 13
7 1
7 13
8 1
8 13
9 1
9 13
10 1
10 13
11 1
11 13
12 1
12 13
13 1
13 2
13 3
13 4
13 5
13 6
13 7
13 8
13 9
13 10
13 11
13 12
13 13

output:

up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
right
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
left
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
...

result:

ok 

Test #27:

score: 0
Accepted
time: 1ms
memory: 3692kb

input:

50
30 30 29 30
0 0
0 1
1 0
0 2
1 1
2 0
0 3
1 2
2 1
3 0
0 4
1 3
2 2
3 1
4 0
0 5
1 4
2 3
3 2
4 1
5 0
0 6
1 5
2 4
3 3
4 2
5 1
6 0
0 7
1 6
2 5
3 4
4 3
5 2
6 1
7 0
0 8
1 7
2 6
3 5
4 4
5 3
6 2
7 1
8 0
0 9
1 8
2 7
3 6
4 5

output:

up
up
right
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
up
left
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
down
up
left
left
left
left
left...

result:

ok