CSES - Datatähti 2024 alku - Results
Submission details
Task:Käännöt
Sender:d-m-g
Submission time:2023-11-12 23:41:49 +0200
Language:Python3 (CPython3)
Status:READY
Result:0
Feedback
groupverdictscore
#10
#20
#30
#40
Test results
testverdicttimegroup
#1ACCEPTED0.02 s1details
#2ACCEPTED0.02 s1details
#3--1details
#4--1details
#5--1details
#6ACCEPTED0.02 s2details
#7ACCEPTED0.02 s2details
#8ACCEPTED0.02 s2details
#9--2details
#10--2details
#11--2details
#12--2details
#13--2details
#14--2details
#15--2details
#16--2details
#17ACCEPTED0.02 s3details
#18ACCEPTED0.02 s3details
#19--3details
#20--3details
#21--3details
#22--3details
#23--3details
#24--3details
#25--3details
#26ACCEPTED0.02 s4details
#27ACCEPTED0.02 s4details
#28--4details
#29--4details
#30--4details
#31--4details
#32--4details
#33--4details
#34--4details

Code

def get_all_one_step_diff(perm, n, num_cycle=4):
    perms = []
    for i in range(n - num_cycle + 1):
        cur_perm = list(perm)
        cur_perm[i:i + num_cycle] = cur_perm[i:i + num_cycle][::-1]
        perms.append(cur_perm)
    return perms


n, num_cycle = map(int, input().split())
goal = list(map(int, input().split()))
first_perm = [el + 1 for el in range(n)]

all_reachable_perms = set()
path = {}
all_reachable_perms.add(tuple(first_perm))
path[tuple(first_perm)] = []

q = []
perms = get_all_one_step_diff(tuple(first_perm), n, num_cycle)
for i in range(len(perms)):
    q.append(perms[i])
    all_reachable_perms.add(tuple(perms[i]))
    path[tuple(perms[i])] = [i + 1]

found = False
while q and not found:
    cur_perm = q.pop(0)  # Changed to pop from the beginning for BFS
    perms = get_all_one_step_diff(tuple(cur_perm), n, num_cycle)
    for i in range(len(perms)):
        if tuple(perms[i]) not in all_reachable_perms:
            q.append(perms[i])
            all_reachable_perms.add(tuple(perms[i]))
            path[tuple(perms[i])] = path[tuple(cur_perm)] + [i + 1]
        if tuple(perms[i]) == tuple(goal):
            found = True
            break

if tuple(goal) in all_reachable_perms:
    print("YES")
    print(len(path[tuple(goal)]))
    res = path[tuple(goal)]
    res.reverse()
    print(*res)
else:
    print("NO")

Test details

Test 1

Group: 1

Verdict: ACCEPTED

input
5 2
1 2 3 4 5

correct output
YES
0

user output
YES
0

Test 2

Group: 1

Verdict: ACCEPTED

input
5 2
2 1 3 4 5

correct output
YES
1
1

user output
YES
1
1

Test 3

Group: 1

Verdict:

input
20 2
6 20 18 2 16 13 19 17 8 14 11 ...

correct output
YES
366
2 3 4 5 6 7 8 9 10 11 12 13 14...

user output
(empty)

Test 4

Group: 1

Verdict:

input
100 2
100 92 62 88 12 7 43 31 19 72 ...

correct output
YES
2876
1 2 3 4 5 6 7 8 9 10 11 12 13 ...

user output
(empty)

Test 5

Group: 1

Verdict:

input
100 2
100 99 98 97 96 95 94 93 92 91...

correct output
YES
5248
1 2 3 4 5 6 7 8 9 10 11 12 13 ...

user output
(empty)

Test 6

Group: 2

Verdict: ACCEPTED

input
5 3
1 2 3 4 5

correct output
YES
0

user output
YES
0

Test 7

Group: 2

Verdict: ACCEPTED

input
5 3
3 5 4 1 2

correct output
NO

user output
NO

Test 8

Group: 2

Verdict: ACCEPTED

input
5 3
5 2 1 4 3

correct output
YES
8
1 2 1 3 1 2 3 1

user output
YES
2
1 3

Test 9

Group: 2

Verdict:

input
20 3
19 14 1 18 3 4 11 20 13 6 17 8...

correct output
YES
52
8 10 12 14 16 18 1 3 5 7 9 11 ...

user output
(empty)

Test 10

Group: 2

Verdict:

input
20 3
9 6 13 18 5 10 3 2 7 20 1 4 19...

correct output
YES
50
10 12 14 16 18 13 15 17 4 6 8 ...

user output
(empty)

Test 11

Group: 2

Verdict:

input
500 3
53 52 21 76 25 142 5 4 83 176 ...

correct output
YES
15194
334 336 338 340 342 344 346 34...

user output
(empty)

Test 12

Group: 2

Verdict:

input
500 3
51 44 147 172 1 28 27 82 233 1...

correct output
YES
15565
366 368 370 372 374 376 378 38...

user output
(empty)

Test 13

Group: 2

Verdict:

input
500 3
75 46 179 62 221 14 67 154 89 ...

correct output
YES
15920
454 456 458 460 462 464 466 46...

user output
(empty)

Test 14

Group: 2

Verdict:

input
500 3
161 54 285 12 71 142 111 94 97...

correct output
YES
15931
408 410 412 414 416 418 420 42...

user output
(empty)

Test 15

Group: 2

Verdict:

input
500 3
122 260 455 113 315 276 433 43...

correct output
NO

user output
(empty)

Test 16

Group: 2

Verdict:

input
500 3
499 500 497 498 495 496 493 49...

correct output
YES
62264
2 4 6 8 10 12 14 16 18 20 22 2...

user output
(empty)

Test 17

Group: 3

Verdict: ACCEPTED

input
5 4
1 2 3 4 5

correct output
YES
0

user output
YES
0

Test 18

Group: 3

Verdict: ACCEPTED

input
5 4
5 1 2 3 4

correct output
YES
4
1 2 1 2

user output
YES
4
1 2 1 2

Test 19

Group: 3

Verdict:

input
500 4
58 14 107 124 4 113 24 290 56 ...

correct output
YES
15698
389 392 395 398 401 404 407 41...

user output
(empty)

Test 20

Group: 3

Verdict:

input
500 4
113 187 278 242 23 67 48 298 3...

correct output
YES
15004
480 481 480 482 485 488 491 49...

user output
(empty)

Test 21

Group: 3

Verdict:

input
500 4
5 233 199 35 213 354 11 134 30...

correct output
YES
16770
458 461 464 467 470 473 476 47...

user output
(empty)

Test 22

Group: 3

Verdict:

input
500 4
169 47 21 137 57 138 360 147 4...

correct output
YES
15889
497 371 372 371 373 376 379 38...

user output
(empty)

Test 23

Group: 3

Verdict:

input
500 4
493 409 291 313 156 443 496 40...

correct output
YES
22886
480 481 480 482 485 488 491 49...

user output
(empty)

Test 24

Group: 3

Verdict:

input
500 4
137 99 100 226 326 298 140 340...

correct output
NO

user output
(empty)

Test 25

Group: 3

Verdict:

input
500 4
500 499 498 497 496 495 494 49...

correct output
YES
41458
1 2 1 2 5 8 11 14 17 20 23 26 ...

user output
(empty)

Test 26

Group: 4

Verdict: ACCEPTED

input
5 5
1 2 3 4 5

correct output
YES
0

user output
YES
0

Test 27

Group: 4

Verdict: ACCEPTED

input
5 5
5 4 3 2 1

correct output
YES
1
1

user output
YES
1
1

Test 28

Group: 4

Verdict:

input
500 5
145 26 285 154 147 314 141 40 ...

correct output
YES
13786
216 220 224 228 232 236 240 24...

user output
(empty)

Test 29

Group: 4

Verdict:

input
500 5
137 22 399 292 249 6 51 224 42...

correct output
YES
13465
456 460 464 468 472 476 480 48...

user output
(empty)

Test 30

Group: 4

Verdict:

input
500 5
153 52 85 100 329 60 433 468 4...

correct output
YES
13642
377 378 377 380 384 388 392 39...

user output
(empty)

Test 31

Group: 4

Verdict:

input
500 5
267 326 95 108 189 32 291 366 ...

correct output
YES
14639
213 214 213 216 220 224 228 23...

user output
(empty)

Test 32

Group: 4

Verdict:

input
500 5
15 450 272 80 321 101 247 438 ...

correct output
NO

user output
(empty)

Test 33

Group: 4

Verdict:

input
499 5
497 498 499 496 495 494 493 49...

correct output
YES
30886
3 7 11 15 19 23 27 31 35 39 43...

user output
(empty)

Test 34

Group: 4

Verdict:

input
500 5
499 500 497 498 495 496 493 49...

correct output
YES
30919
1 4 8 12 16 20 24 28 32 36 40 ...

user output
(empty)