CSES - Datatähti 2025 alku

Submission details
Task:	Niitty
Sender:	zfoil
Submission time:	2024-11-10 15:01:01 +0200
Language:	C
Status:	READY
Result:	20

Feedback
group	verdict	score
#1	ACCEPTED	4
#2	ACCEPTED	6
#3	ACCEPTED	10
#4	TIME LIMIT EXCEEDED	0
#5	TIME LIMIT EXCEEDED	0
#6	TIME LIMIT EXCEEDED	0

Test results
test	verdict	time	group
#1	ACCEPTED	0.00 s	1, 2, 3, 4, 5, 6	details
#2	ACCEPTED	0.00 s	1, 2, 3, 4, 5, 6	details
#3	ACCEPTED	0.00 s	1, 2, 3, 4, 5, 6	details
#4	ACCEPTED	0.00 s	1, 2, 3, 4, 5, 6	details
#5	ACCEPTED	0.00 s	1, 2, 3, 4, 5, 6	details
#6	ACCEPTED	0.01 s	2, 3, 4, 5, 6	details
#7	ACCEPTED	0.01 s	2, 3, 4, 5, 6	details
#8	ACCEPTED	0.01 s	2, 3, 4, 5, 6	details
#9	ACCEPTED	0.01 s	2, 3, 4, 5, 6	details
#10	ACCEPTED	0.20 s	3, 4, 5, 6	details
#11	ACCEPTED	0.18 s	3, 4, 5, 6	details
#12	ACCEPTED	0.20 s	3, 4, 5, 6	details
#13	ACCEPTED	0.17 s	3, 4, 5, 6	details
#14	TIME LIMIT EXCEEDED	--	4, 5, 6	details
#15	TIME LIMIT EXCEEDED	--	4, 5, 6	details
#16	TIME LIMIT EXCEEDED	--	4, 5, 6	details
#17	TIME LIMIT EXCEEDED	--	4, 5, 6	details
#18	TIME LIMIT EXCEEDED	--	5, 6	details
#19	TIME LIMIT EXCEEDED	--	5, 6	details
#20	TIME LIMIT EXCEEDED	--	5, 6	details
#21	TIME LIMIT EXCEEDED	--	5, 6	details
#22	TIME LIMIT EXCEEDED	--	6	details
#23	TIME LIMIT EXCEEDED	--	6	details
#24	TIME LIMIT EXCEEDED	--	6	details
#25	TIME LIMIT EXCEEDED	--	6	details

Compiler report

input/code.c: In function 'main':
input/code.c:143:16: warning: unused variable 'j' [-Wunused-variable]
  143 |         int i, j, result;
      |                ^
input/code.c:143:13: warning: unused variable 'i' [-Wunused-variable]
  143 |         int i, j, result;
      |             ^
input/code.c: In function 'create_field':
input/code.c:97:17: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   97 |                 scanf("%s", flowers_in_row);
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~
input/code.c: In function 'main':
input/code.c:145:9: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
  145 |         scanf("%d", &field.width);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~

Code

#include <stdio.h>
#include <stdlib.h>

typedef struct {
	int letter_count[26];
} Alphabet;

typedef struct {
	int width;
	Alphabet *NW_flowers;
	Alphabet *empty_alphabet;
} Field;

int get_letter_index(char c)
{
	return (int)c - 65;
}

void reset_alphabet(Alphabet *alphabet)
{
	int i;
	for (i = 0; i < 26; i++) {
		alphabet->letter_count[i] = 0;
	}
}

void copy_alphabet(Alphabet *destination, Alphabet *source)
{
	int i;
	for (i = 0; i < 26; i++) {
		destination->letter_count[i] = source->letter_count[i];
	}
}

int contains_all_species(Alphabet *alphabet, Alphabet *all_flowers)
{
	int i;
	for (i = 0; i < 26; i++) {
		if (alphabet->letter_count[i] < 1 && all_flowers->letter_count[i] != 0) {
			return 0;
		}
	}
	return 1;
}

void add_alphabets(Alphabet *term1, Alphabet *term2)
{
	int i;
	for (i = 0; i < 26; i++) {
		term1->letter_count[i] += term2->letter_count[i];
	}
}

void subtract_alphabets(Alphabet *term1, Alphabet *term2)
{
	int i;
	for (i = 0; i < 26; i++) {
		term1->letter_count[i] -= term2->letter_count[i];
	}
}

void print_alphabet(Alphabet *alphabet)
{
	int i;
	for (i = 0; i < 26; i++) {
		printf("%d", alphabet->letter_count[i]);
	}
	printf("\n");
}

Alphabet *get_at(Field *field, int column, int row)
{
	if (column < 0 || row < 0) {
		return field->empty_alphabet;
	}
	return field->NW_flowers + row * field->width + column;
}

void update_flower_count(Field *field, int row, int column, Alphabet *row_running_total)
{
	if (row > 0) {
		copy_alphabet(get_at(field, column, row), get_at(field, column, row - 1));
	} else {
		reset_alphabet(get_at(field, column, row));
	}
	add_alphabets(get_at(field, column, row), row_running_total);
}

void create_field(Field *field)
{
	int row, column, letter_index;
	char *flowers_in_row;
	Alphabet row_running_total;
	flowers_in_row = malloc(field->width * sizeof(*flowers_in_row));
	for (row = 0; row < field->width; row++) {
		scanf("%s", flowers_in_row);
		reset_alphabet(&row_running_total);
		for (column = 0; column < field->width; column++) {
			letter_index = get_letter_index(flowers_in_row[column]);
			row_running_total.letter_count[letter_index]++;
			update_flower_count(field, row, column, &row_running_total);
		}
	}
}

void get_quadrant_alphabet(Alphabet *result, Field *field, int x, int y, int width, int height)
{
	Alphabet *full, *top_excess, *bottom_excess, *corner;
	full          = get_at(field, x + width - 1, y + height - 1);
	top_excess    = get_at(field, x + width - 1, y - 1);
	bottom_excess = get_at(field, x - 1, y + height - 1);
	corner        = get_at(field, x - 1, y - 1);
	add_alphabets(result, full);
	subtract_alphabets(result, top_excess);
	subtract_alphabets(result, bottom_excess);
	add_alphabets(result, corner);
}

int get_number_of_possible_fences(Field *field)
{
	int total = 0, i, j, k, l, max = field->width - 1;
	Alphabet result, *all_flowers;
	all_flowers = get_at(field, max, max);
	for (i = max; i >= 0; i--) {
		for (j = max; j >= 0; j--) {
			for (k = i + 1; k <= max + 1; k++) {
				for (l = j + 1; l <= max + 1; l++) {
					reset_alphabet(&result);
					get_quadrant_alphabet(&result, field, i, j, k - i, l - j);
					if (contains_all_species(&result, all_flowers)) {
						total++;
					}
				}
			}
		}
	}
	return total;
}

int main(void)
{
	int i, j, result;
	Field field;
	scanf("%d", &field.width);
	field.NW_flowers = malloc(field.width * field.width * sizeof(*field.NW_flowers));
	field.empty_alphabet = malloc(sizeof(*field.empty_alphabet));
	reset_alphabet(field.empty_alphabet);
	create_field(&field);
	/*
	for (i = 0; i < field.width; i++) {
		for (j = 0; j < field.width; j++) {
			print_alphabet(get_at(&field, i, j));
		}
		printf("\n");
	}
	*/
	result = get_number_of_possible_fences(&field);
	printf("%d\n", result);
	return 0;
}

Test details

Test 1

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

Verdict: ACCEPTED

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

correct output
`2035` view save

user output
`2035` 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: ACCEPTED

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

correct output
`3025` view save

user output
`3025` view save

Test 4

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

Verdict: ACCEPTED

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

correct output
`12` view save

user output
`12` 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: ACCEPTED

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

correct output
`38724` view save

user output
`38724` view save

Test 7

Group: 2, 3, 4, 5, 6

Verdict: ACCEPTED

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

correct output
`8334` view save

user output
`8334` view save

Test 8

Group: 2, 3, 4, 5, 6

Verdict: ACCEPTED

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

correct output
`44100` view save

user output
`44100` view save

Test 9

Group: 2, 3, 4, 5, 6

Verdict: ACCEPTED

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

correct output
`18` view save

user output
`18` view save

Test 10

Group: 3, 4, 5, 6

Verdict: ACCEPTED

input
`50 GRGREEEGREGXRXXEGXXREXGRRRGRRR...` view save

correct output
`1584665` view save

user output
`1584665` view save

Test 11

Group: 3, 4, 5, 6

Verdict: ACCEPTED

input
`50 AITIISJUHCCRZNKSDCNQKYSQRINFWJ...` view save

correct output
`1077746` view save

user output
`1077746` view save

Test 12

Group: 3, 4, 5, 6

Verdict: ACCEPTED

input
`50 OOOOOOOOOOOOOOOOOOOOOOOOOOOOOO...` view save

correct output
`1625625` view save

user output
`1625625` view save

Test 13

Group: 3, 4, 5, 6

Verdict: ACCEPTED

input
`50 FFFFFFFFFFFFFFFFFFFFFFFFFFFFFF...` view save

correct output
`1680` view save

user output
`1680` view save

Test 14

Group: 4, 5, 6

Verdict: TIME LIMIT EXCEEDED

input
`100 NNCMDCDDCCNNNDNCMMNCDCDCCDCDNM...` view save

correct output
`25325366` view save

user output
(empty)

Test 15

Group: 4, 5, 6

Verdict: TIME LIMIT EXCEEDED

input
`100 LIMQQIHASECROEVILNVULGWZJPPKOG...` view save

correct output
`22342463` view save

user output
(empty)

Test 16

Group: 4, 5, 6

Verdict: TIME LIMIT EXCEEDED

input
`100 TTTTTTTTTTTTTTTTTTTTTTTTTTTTTT...` view save

correct output
`25502500` view save

user output
(empty)

Test 17

Group: 4, 5, 6

Verdict: TIME LIMIT EXCEEDED

input
`100 QXQQQQQQQQQQQQQQQQQQQQQQQQQQQQ...` view save

correct output
`25650` view save

user output
(empty)

Test 18

Group: 5, 6

Verdict: TIME LIMIT EXCEEDED

input
`200 NAANANMMKNKKAKMKMAKNKMNKMMNNAA...` view save

correct output
`403292767` view save

user output
(empty)

Test 19

Group: 5, 6

Verdict: TIME LIMIT EXCEEDED

input
`200 OMYWATTLURKQPTKEFMGGYAOONXWVSC...` view save

correct output
`388111321` view save

user output
(empty)

Test 20

Group: 5, 6

Verdict: TIME LIMIT EXCEEDED

input
`200 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCC...` view save

correct output
`404010000` view save

user output
(empty)

Test 21

Group: 5, 6

Verdict: TIME LIMIT EXCEEDED

input
`200 LLLLLLLLLLLLLLLLLHLLLLLLLLLLLL...` view save

correct output
`14159445` view save

user output
(empty)

Test 22

Group: 6

Verdict: TIME LIMIT EXCEEDED

input
`500 VVHWVUHVHUWWWVUUUWVUUHUUWHWUVW...` view save

correct output
`15683003812` view save

user output
(empty)

Test 23

Group: 6

Verdict: TIME LIMIT EXCEEDED

input
`500 OIMZGEQSBMBDSDXSWRFNKSGFEBBTJE...` view save

correct output
`15575906951` view save

user output
(empty)

Test 24

Group: 6

Verdict: TIME LIMIT EXCEEDED

input
`500 IIIIIIIIIIIIIIIIIIIIIIIIIIIIII...` view save

correct output
`15687562500` view save

user output
(empty)

Test 25

Group: 6

Verdict: TIME LIMIT EXCEEDED

input
`500 WWWWWWWWWWWWWWWWWWWWWWWWWWWWWW...` view save

correct output
`3058970930` view save

user output
(empty)

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 (zfoil)