CSES - Datatähti 2025 alku

Submission details
Task:	Niitty
Sender:	zli0122
Submission time:	2024-11-01 09:35:35 +0200
Language:	C++ (C++11)
Status:	READY
Result:	0

Feedback
group	verdict	score
#1	WRONG ANSWER	0
#2	WRONG ANSWER	0
#3	WRONG ANSWER	0
#4	WRONG ANSWER	0
#5	WRONG ANSWER	0
#6	WRONG ANSWER	0

Test results
test	verdict	time	group
#1	WRONG ANSWER	0.00 s	1, 2, 3, 4, 5, 6	details
#2	ACCEPTED	0.00 s	1, 2, 3, 4, 5, 6	details
#3	WRONG ANSWER	0.00 s	1, 2, 3, 4, 5, 6	details
#4	WRONG ANSWER	0.00 s	1, 2, 3, 4, 5, 6	details
#5	ACCEPTED	0.00 s	1, 2, 3, 4, 5, 6	details
#6	WRONG ANSWER	0.00 s	2, 3, 4, 5, 6	details
#7	WRONG ANSWER	0.00 s	2, 3, 4, 5, 6	details
#8	WRONG ANSWER	0.00 s	2, 3, 4, 5, 6	details
#9	WRONG ANSWER	0.00 s	2, 3, 4, 5, 6	details
#10	WRONG ANSWER	0.00 s	3, 4, 5, 6	details
#11	WRONG ANSWER	0.01 s	3, 4, 5, 6	details
#12	WRONG ANSWER	0.00 s	3, 4, 5, 6	details
#13	WRONG ANSWER	0.01 s	3, 4, 5, 6	details
#14	WRONG ANSWER	0.01 s	4, 5, 6	details
#15	WRONG ANSWER	0.01 s	4, 5, 6	details
#16	WRONG ANSWER	0.01 s	4, 5, 6	details
#17	WRONG ANSWER	0.01 s	4, 5, 6	details
#18	WRONG ANSWER	0.01 s	5, 6	details
#19	WRONG ANSWER	0.02 s	5, 6	details
#20	WRONG ANSWER	0.01 s	5, 6	details
#21	WRONG ANSWER	0.06 s	5, 6	details
#22	WRONG ANSWER	0.07 s	6	details
#23	WRONG ANSWER	0.08 s	6	details
#24	WRONG ANSWER	0.07 s	6	details
#25	WRONG ANSWER	0.62 s	6	details

Compiler report

input/code.cpp: In function 'int main()':
input/code.cpp:28:9: warning: unused variable 'required_species' [-Wunused-variable]
   28 |     int required_species = types.size();  // Number of unique flower types in the meadow
      |         ^~~~~~~~~~~~~~~~

Code

#include <bits/stdc++.h>
using namespace std;

int main() {
    int n;
    cin >> n;
    
    // 3D prefix sum array for counting each species (26 letters)
    vector<vector<vector<int>>> prefix_lawn(n + 1, vector<vector<int>>(n + 1, vector<int>(26, 0)));
    unordered_set<char> types;
    
    // Input the grid and build the prefix sums
    char current;
    for (int r = 1; r <= n; r++) {
        for (int c = 1; c <= n; c++) {
            cin >> current;
            int species_index = current - 'A';
            types.insert(current);
            for (int x = 0; x < 26; x++) {
                prefix_lawn[r][c][x] = prefix_lawn[r-1][c][x] + prefix_lawn[r][c-1][x]
                                        - prefix_lawn[r-1][c-1][x];
            }
            prefix_lawn[r][c][species_index]++;
        }
    }

    long long solutions = 0;
    int required_species = types.size();  // Number of unique flower types in the meadow

    // Fix the upper and lower row boundaries of the submatrix
    for (int rl = 1; rl <= n; rl++) {
        for (int rg = rl; rg <= n; rg++) {
            // Use sliding window on columns
            int cl = 1;  // Left column boundary
            unordered_map<char, int> species_count;

            for (int cg = 1; cg <= n; cg++) { // Right column boundary
                // Update species_count with the current column range [rl, rg] x [cl, cg]
                bool all_species_present = true;
                
                for (auto ch : types) {
                    int index = ch - 'A';
                    int count = prefix_lawn[rg][cg][index] - prefix_lawn[rl-1][cg][index]
                                - prefix_lawn[rg][cl-1][index] + prefix_lawn[rl-1][cl-1][index];
                    if (count == 0) {
                        all_species_present = false;
                        break;
                    }
                }

                // If valid, add all submatrices starting from (rl, cl) to (rg, cg)
                if (all_species_present) {
                    solutions += (n - cg + 1);  // All submatrices ending in this row range
                    break; // Move cl to avoid redundant checks
                }
            }
        }
    }

    cout << solutions << endl;
}

Test details

Test 1

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

Verdict: WRONG ANSWER

input
`10 TNCTNPNTPC NPPNTNTPTP NTNTTCNTCT NPCPNPPNTT ...` view save

correct output
`2035` view save

user output
`408` view save

Test 2

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

Verdict: ACCEPTED

input
`10 NFWQLWNWYS DZOQJVXFPJ CNHXPXMCQD QRTBVNLTQC ...` view save

correct output
`9` view save

user output
`9` view save

Test 3

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

Verdict: WRONG ANSWER

input
`10 XXXXXXXXXX XXXXXXXXXX XXXXXXXXXX XXXXXXXXXX ...` view save

correct output
`3025` view save

user output
`550` view save

Test 4

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

Verdict: WRONG ANSWER

input
`10 FFFFFFFFFF FFFFFCFFFF FFFFFFJFFF FFFFFFFFFF ...` view save

correct output
`12` view save

user output
`4` view save

Test 5

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

Verdict: ACCEPTED

input
`1 X` view save

correct output
`1` view save

user output
`1` view save

Test 6

Group: 2, 3, 4, 5, 6

Verdict: WRONG ANSWER

input
`20 BBCBUBOUOBBCUUBBCOUO BOUCOOCUBCOOOCOBOCUO UCCUUUOBCOCBCBUBUCOO BUOBUCUCUOOBCOOUBUOO ...` view save

correct output
`38724` view save

user output
`3952` view save

Test 7

Group: 2, 3, 4, 5, 6

Verdict: WRONG ANSWER

input
`20 CBGLSHGZHYZDWBNDBJUG SMUXOJQYPXZDTMJUIWOJ XIDSTNBGHKRKOVUVMINB MTQGCFRUHQKALXRNCQGS ...` view save

correct output
`8334` view save

user output
`1413` view save

Test 8

Group: 2, 3, 4, 5, 6

Verdict: WRONG ANSWER

input
`20 KKKKKKKKKKKKKKKKKKKK KKKKKKKKKKKKKKKKKKKK KKKKKKKKKKKKKKKKKKKK KKKKKKKKKKKKKKKKKKKK ...` view save

correct output
`44100` view save

user output
`4200` view save

Test 9

Group: 2, 3, 4, 5, 6

Verdict: WRONG ANSWER

input
`20 AAAAAAAAXAAAAAAAAAAA AAAWAAAAAAAAAAAAAOAA AAAAAAAAAAAAAAAAAPAA AAAAAAAAKAAAAAAAAAAZ ...` view save

correct output
`18` view save

user output
`6` view save

Test 10

Group: 3, 4, 5, 6

Verdict: WRONG ANSWER

input
`50 GRGREEEGREGXRXXEGXXREXGRRRGRRR...` view save

correct output
`1584665` view save

user output
`62889` view save

Test 11

Group: 3, 4, 5, 6

Verdict: WRONG ANSWER

input
`50 AITIISJUHCCRZNKSDCNQKYSQRINFWJ...` view save

correct output
`1077746` view save

user output
`48654` view save

Test 12

Group: 3, 4, 5, 6

Verdict: WRONG ANSWER

input
`50 OOOOOOOOOOOOOOOOOOOOOOOOOOOOOO...` view save

correct output
`1625625` view save

user output
`63750` view save

Test 13

Group: 3, 4, 5, 6

Verdict: WRONG ANSWER

input
`50 FFFFFFFFFFFFFFFFFFFFFFFFFFFFFF...` view save

correct output
`1680` view save

user output
`280` view save

Test 14

Group: 4, 5, 6

Verdict: WRONG ANSWER

input
`100 NNCMDCDDCCNNNDNCMMNCDCDCCDCDNM...` view save

correct output
`25325366` view save

user output
`503179` view save

Test 15

Group: 4, 5, 6

Verdict: WRONG ANSWER

input
`100 LIMQQIHASECROEVILNVULGWZJPPKOG...` view save

correct output
`22342463` view save

user output
`466326` view save

Test 16

Group: 4, 5, 6

Verdict: WRONG ANSWER

input
`100 TTTTTTTTTTTTTTTTTTTTTTTTTTTTTT...` view save

correct output
`25502500` view save

user output
`505000` view save

Test 17

Group: 4, 5, 6

Verdict: WRONG ANSWER

input
`100 QXQQQQQQQQQQQQQQQQQQQQQQQQQQQQ...` view save

correct output
`25650` view save

user output
`2868` view save

Test 18

Group: 5, 6

Verdict: WRONG ANSWER

input
`200 NAANANMMKNKKAKMKMAKNKMNKMMNNAA...` view save

correct output
`403292767` view save

user output
`4016474` view save

Test 19

Group: 5, 6

Verdict: WRONG ANSWER

input
`200 OMYWATTLURKQPTKEFMGGYAOONXWVSC...` view save

correct output
`388111321` view save

user output
`3932823` view save

Test 20

Group: 5, 6

Verdict: WRONG ANSWER

input
`200 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCC...` view save

correct output
`404010000` view save

user output
`4020000` view save

Test 21

Group: 5, 6

Verdict: WRONG ANSWER

input
`200 LLLLLLLLLLLLLLLLLHLLLLLLLLLLLL...` view save

correct output
`14159445` view save

user output
`321974` view save

Test 22

Group: 6

Verdict: WRONG ANSWER

input
`500 VVHWVUHVHUWWWVUUUWVUUHUUWHWUVW...` view save

correct output
`15683003812` view save

user output
`62615922` view save

Test 23

Group: 6

Verdict: WRONG ANSWER

input
`500 OIMZGEQSBMBDSDXSWRFNKSGFEBBTJE...` view save

correct output
`15575906951` view save

user output
`62377605` view save

Test 24

Group: 6

Verdict: WRONG ANSWER

input
`500 IIIIIIIIIIIIIIIIIIIIIIIIIIIIII...` view save

correct output
`15687562500` view save

user output
`62625000` view save

Test 25

Group: 6

Verdict: WRONG ANSWER

input
`500 WWWWWWWWWWWWWWWWWWWWWWWWWWWWWW...` view save

correct output
`3058970930` view save

user output
`22973347` view save

Datatähti 2025 alku

Niitty

Compiler report

Code

Test details

Test 1

Test 2

Test 3

Test 4

Test 5

Test 6

Test 7

Test 8

Test 9

Test 10

Test 11

Test 12

Test 13

Test 14

Test 15

Test 16

Test 17

Test 18

Test 19

Test 20

Test 21

Test 22

Test 23

Test 24

Test 25

Tasks

Submissions (zli0122)