CSES - Datatähti 2025 alku - Results
Submission details
Task:Niitty
Sender:worst
Submission time:2024-11-03 15:10:08 +0200
Language:Python3 (PyPy3)
Status:READY
Result:20
Feedback
groupverdictscore
#1ACCEPTED4
#2ACCEPTED6
#3ACCEPTED10
#40
#50
#60
Test results
testverdicttimegroup
#1ACCEPTED0.05 s1, 2, 3, 4, 5, 6details
#2ACCEPTED0.06 s1, 2, 3, 4, 5, 6details
#3ACCEPTED0.04 s1, 2, 3, 4, 5, 6details
#4ACCEPTED0.04 s1, 2, 3, 4, 5, 6details
#5ACCEPTED0.04 s1, 2, 3, 4, 5, 6details
#6ACCEPTED0.09 s2, 3, 4, 5, 6details
#7ACCEPTED0.10 s2, 3, 4, 5, 6details
#8ACCEPTED0.06 s2, 3, 4, 5, 6details
#9ACCEPTED0.07 s2, 3, 4, 5, 6details
#10ACCEPTED0.14 s3, 4, 5, 6details
#11ACCEPTED0.33 s3, 4, 5, 6details
#12ACCEPTED0.08 s3, 4, 5, 6details
#13ACCEPTED0.12 s3, 4, 5, 6details
#14ACCEPTED0.35 s4, 5, 6details
#15--4, 5, 6details
#16ACCEPTED0.17 s4, 5, 6details
#17ACCEPTED0.32 s4, 5, 6details
#18--5, 6details
#19--5, 6details
#20ACCEPTED0.69 s5, 6details
#21--5, 6details
#22--6details
#23--6details
#24--6details
#25--6details

Code

n = int(input())
flowers = [input().strip() for _ in range(n)]


unique_flowers = set()
for row in flowers:
    unique_flowers.update(row)
required_flowers = len(unique_flowers)


prefix_counts = {flower: [[0] * (n + 1) for _ in range(n + 1)] for flower in unique_flowers}


for i in range(n):
    for j in range(n):
        flower = flowers[i][j]
        for f in unique_flowers:
            prefix_counts[f][i + 1][j + 1] = prefix_counts[f][i + 1][j] + prefix_counts[f][i][j + 1] - prefix_counts[f][i][j]
            if f == flower:
                prefix_counts[f][i + 1][j + 1] += 1


def has_all_flowers(top, bottom, left, right):
    for flower in unique_flowers:
        total = (prefix_counts[flower][bottom + 1][right + 1]
                 - prefix_counts[flower][top][right + 1]
                 - prefix_counts[flower][bottom + 1][left]
                 + prefix_counts[flower][top][left])
        if total == 0:
            return False
    return True

count = 0
for top in range(n):
    for bottom in range(top, n):
        left = 0
        for right in range(n):
            while left <= right and has_all_flowers(top, bottom, left, right):
                count += n - right
                left += 1

print(count)

Test details

Test 1

Group: 1, 2, 3, 4, 5, 6

Verdict: ACCEPTED

input
10
TNCTNPNTPC
NPPNTNTPTP
NTNTTCNTCT
NPCPNPPNTT
...

correct output
2035

user output
2035

Test 2

Group: 1, 2, 3, 4, 5, 6

Verdict: ACCEPTED

input
10
NFWQLWNWYS
DZOQJVXFPJ
CNHXPXMCQD
QRTBVNLTQC
...

correct output
9

user output
9

Test 3

Group: 1, 2, 3, 4, 5, 6

Verdict: ACCEPTED

input
10
XXXXXXXXXX
XXXXXXXXXX
XXXXXXXXXX
XXXXXXXXXX
...

correct output
3025

user output
3025

Test 4

Group: 1, 2, 3, 4, 5, 6

Verdict: ACCEPTED

input
10
FFFFFFFFFF
FFFFFCFFFF
FFFFFFJFFF
FFFFFFFFFF
...

correct output
12

user output
12

Test 5

Group: 1, 2, 3, 4, 5, 6

Verdict: ACCEPTED

input
1
X

correct output
1

user output
1

Test 6

Group: 2, 3, 4, 5, 6

Verdict: ACCEPTED

input
20
BBCBUBOUOBBCUUBBCOUO
BOUCOOCUBCOOOCOBOCUO
UCCUUUOBCOCBCBUBUCOO
BUOBUCUCUOOBCOOUBUOO
...

correct output
38724

user output
38724

Test 7

Group: 2, 3, 4, 5, 6

Verdict: ACCEPTED

input
20
CBGLSHGZHYZDWBNDBJUG
SMUXOJQYPXZDTMJUIWOJ
XIDSTNBGHKRKOVUVMINB
MTQGCFRUHQKALXRNCQGS
...

correct output
8334

user output
8334

Test 8

Group: 2, 3, 4, 5, 6

Verdict: ACCEPTED

input
20
KKKKKKKKKKKKKKKKKKKK
KKKKKKKKKKKKKKKKKKKK
KKKKKKKKKKKKKKKKKKKK
KKKKKKKKKKKKKKKKKKKK
...

correct output
44100

user output
44100

Test 9

Group: 2, 3, 4, 5, 6

Verdict: ACCEPTED

input
20
AAAAAAAAXAAAAAAAAAAA
AAAWAAAAAAAAAAAAAOAA
AAAAAAAAAAAAAAAAAPAA
AAAAAAAAKAAAAAAAAAAZ
...

correct output
18

user output
18

Test 10

Group: 3, 4, 5, 6

Verdict: ACCEPTED

input
50
GRGREEEGREGXRXXEGXXREXGRRRGRRR...

correct output
1584665

user output
1584665

Test 11

Group: 3, 4, 5, 6

Verdict: ACCEPTED

input
50
AITIISJUHCCRZNKSDCNQKYSQRINFWJ...

correct output
1077746

user output
1077746

Test 12

Group: 3, 4, 5, 6

Verdict: ACCEPTED

input
50
OOOOOOOOOOOOOOOOOOOOOOOOOOOOOO...

correct output
1625625

user output
1625625

Test 13

Group: 3, 4, 5, 6

Verdict: ACCEPTED

input
50
FFFFFFFFFFFFFFFFFFFFFFFFFFFFFF...

correct output
1680

user output
1680

Test 14

Group: 4, 5, 6

Verdict: ACCEPTED

input
100
NNCMDCDDCCNNNDNCMMNCDCDCCDCDNM...

correct output
25325366

user output
25325366

Test 15

Group: 4, 5, 6

Verdict:

input
100
LIMQQIHASECROEVILNVULGWZJPPKOG...

correct output
22342463

user output
(empty)

Test 16

Group: 4, 5, 6

Verdict: ACCEPTED

input
100
TTTTTTTTTTTTTTTTTTTTTTTTTTTTTT...

correct output
25502500

user output
25502500

Test 17

Group: 4, 5, 6

Verdict: ACCEPTED

input
100
QXQQQQQQQQQQQQQQQQQQQQQQQQQQQQ...

correct output
25650

user output
25650

Test 18

Group: 5, 6

Verdict:

input
200
NAANANMMKNKKAKMKMAKNKMNKMMNNAA...

correct output
403292767

user output
(empty)

Test 19

Group: 5, 6

Verdict:

input
200
OMYWATTLURKQPTKEFMGGYAOONXWVSC...

correct output
388111321

user output
(empty)

Test 20

Group: 5, 6

Verdict: ACCEPTED

input
200
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCC...

correct output
404010000

user output
404010000

Test 21

Group: 5, 6

Verdict:

input
200
LLLLLLLLLLLLLLLLLHLLLLLLLLLLLL...

correct output
14159445

user output
(empty)

Test 22

Group: 6

Verdict:

input
500
VVHWVUHVHUWWWVUUUWVUUHUUWHWUVW...

correct output
15683003812

user output
(empty)

Test 23

Group: 6

Verdict:

input
500
OIMZGEQSBMBDSDXSWRFNKSGFEBBTJE...

correct output
15575906951

user output
(empty)

Test 24

Group: 6

Verdict:

input
500
IIIIIIIIIIIIIIIIIIIIIIIIIIIIII...

correct output
15687562500

user output
(empty)

Test 25

Group: 6

Verdict:

input
500
WWWWWWWWWWWWWWWWWWWWWWWWWWWWWW...

correct output
3058970930

user output
(empty)