CSES - Datatähti 2025 alku

Submission details
Task:	Niitty
Sender:	DLPS
Submission time:	2026-09-15 15:59:21 +0300
Language:	C++ (C++20)
Status:	READY
Result:	0

Feedback
subtask	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	subtask
#1	WRONG ANSWER	0.00 s	1, 2, 3, 4, 5, 6	details
#2	WRONG ANSWER	0.01 s	1, 2, 3, 4, 5, 6	details
#3	WRONG ANSWER	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	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	0.00 s	3, 4, 5, 6	details
#12	WRONG ANSWER	0.00 s	3, 4, 5, 6	details
#13	WRONG ANSWER	0.00 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	0.01 s	5, 6	details
#20	WRONG ANSWER	0.01 s	5, 6	details
#21	WRONG ANSWER	0.01 s	5, 6	details
#22	WRONG ANSWER	0.02 s	6	details
#23	WRONG ANSWER	0.03 s	6	details
#24	WRONG ANSWER	0.02 s	6	details
#25	WRONG ANSWER	0.02 s	6	details

Compiler report

input/code.cpp: In function 'int main()':
input/code.cpp:130:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  130 |                 for (int x = 0; x < row.size(); ++x)
      |                                 ~~^~~~~~~~~~~~
input/code.cpp: At global scope:
input/code.cpp:61:12: warning: 'int Y2Solver(int, int, int, int, int)' defined but not used [-Wunused-function]
   61 | static int Y2Solver(int min, int max, int x1, int x2, int y1)
      |            ^~~~~~~~

Code

#pragma GCC optimize("O3")
 
#include "bits/stdc++.h"
#include "unordered_map"
#include "set"
#include "map"
#include "vector"
 
using namespace std;
 
int preCalcMap[6526026];
int flowerCounts[26] = { 0 };
 
static set<int> present_flowers = {};
static map<int, int> min_x = {};
static map<int, int> max_x = {};
static map<int, int> min_y = {};
static map<int, int> max_y = {};

// Debug
int CALLS = 0;
 
int fieldSize = 0;
 
const unordered_map<char, int> flowerIndecies = { {'A',0},{'B',1},{'C',2},{'D',3},{'E',4},{'F',5},{'G',6},{'H',7},{'I',8},{'J',9},{'K',10},{'L',11},{'M',12},{'N',13},{'O',14},{'P',15},{'Q',16},{'R',17},{'S',18},{'T',19},{'U',20},{'V',21},{'W',22},{'X',23},{'Y',24},{'Z',25} };
 
static bool ContainsAllFlowers(int x1, int x2, int y1, int y2)
{
	++CALLS;
 
	int i1 = (y2 + 1) * 501 + x2 + 1;
	int i2 = y1 * 501 + x2 + 1;
	int i3 = (y2 + 1) * 501 + x1;
	int i4 = y1 * 501 + x1;
 
	for (int i = 0; i < 26; ++i)
	{
		if (flowerCounts[i] == 0)
		{
			continue;
		}
 
		//auto& flower = preCalcMap[i];
 
		int a = preCalcMap[i1 + i * 251001];
		int b = preCalcMap[i2 + i * 251001];
		int c = preCalcMap[i3 + i * 251001];
		int d = preCalcMap[i4 + i * 251001];
 
		if (a - b - c + d == 0)
		{
			return false;
		}
	}
 
	return true;
}
 
int lastSolution = -1;
 
static int Y2Solver(int min, int max, int x1, int x2, int y1)
{
	int localMin = min;
	int localMax = max;
 
	if (lastSolution != -1 && ContainsAllFlowers(x1, x2, y1, lastSolution))
	{
		return (max - lastSolution + 1);
	}
 
 
	int current = (min + max) / 2;
 
	bool first = true;
	int change = 0;
	bool wasSuccess = false;
 
	while (true)
	{
		if (ContainsAllFlowers(x1, x2, y1, current))
		{
			if (change == 1 && !wasSuccess)
			{
				break;
			}
			if (change == 0 && wasSuccess)
			{
				break;
			}
 
			localMax = current;
 
			change = (localMin + current) / 2 - current;
			current += change;
			wasSuccess = true;
		}
		else
		{
			if (change == -1 && wasSuccess)
			{
				++current;
				break;
			}
			if (change == 0 && !first)
			{
				return 0;
			}
 
 
			localMin = current;
			change = ceil((current + localMax) / 2.0f) - current;
			current += change;
			wasSuccess = false;
		}
		first = false;
	}
	lastSolution = current;
	return (max - current + 1);
}
 
int main()
{
	cin >> fieldSize;
 
	for (int y = 0; y < fieldSize; ++y)
	{
		string row;
		cin >> row;
 
		for (int x = 0; x < row.size(); ++x)
		{
			int flowerType = flowerIndecies.at(row[x]);
			//++flowerCounts[flowerType];
			
			if(present_flowers.contains(flowerType))
			{
				if(x < min_x[flowerType])
				{
					min_x[flowerType] = x;
				}
				if(x > max_x[flowerType])
				{
					max_x[flowerType] = x;
				}
				if(y < min_y[flowerType])
				{
					min_y[flowerType] = y;
				}
				if(y > max_y[flowerType])
				{
					max_y[flowerType] = y;
				}
			}
			else
			{
				present_flowers.insert(flowerType);
				min_x[flowerType] = x;
				max_x[flowerType] = x;
				min_y[flowerType] = y;
				max_y[flowerType] = y;
			}
		}
	}
	int count = 0;
	
	int x_min = 0;
	int y_min = 0;
	int x_max = fieldSize - 1;
	int y_max = fieldSize - 1;

	for(auto &flower : present_flowers)
	{
		if(min_x[flower] > x_min)
		{
			x_min = min_x[flower];
		}
		if(max_x[flower] < x_max)
		{
			x_max = max_x[flower];
		}
		if(min_y[flower] > y_min)
		{
			y_min = min_y[flower];
		}
		if(max_y[flower] < y_max)
		{
			y_max = max_y[flower];
		}
	}

	int top_shrink = y_max + 1;
	int bottom_shrink = fieldSize - y_min;
	int left_shrink = x_max + 1;
	int right_shrink = fieldSize - x_min;

	count = top_shrink * bottom_shrink * left_shrink * right_shrink;
	
	cout << count;
}

Test details

Test 1

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

Verdict: WRONG ANSWER

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

correct output
`2035` view save

user output
`10000` view save

Feedback: Incorrect character on line 1 col 1: expected "2035", got "10000"

Test 2

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

Verdict: WRONG ANSWER

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

correct output
`9` view save

user output
`12` view save

Feedback: Incorrect character on line 1 col 1: expected "9", got "12"

Test 3

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

Verdict: WRONG ANSWER

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

correct output
`3025` view save

user output
`10000` view save

Feedback: Incorrect character on line 1 col 1: expected "3025", got "10000"

Test 4

Subtask: 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

Subtask: 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

Subtask: 2, 3, 4, 5, 6

Verdict: WRONG ANSWER

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

correct output
`38724` view save

user output
`160000` view save

Feedback: Incorrect character on line 1 col 1: expected "38724", got "160000"

Test 7

Subtask: 2, 3, 4, 5, 6

Verdict: WRONG ANSWER

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

correct output
`8334` view save

user output
`48384` view save

Feedback: Incorrect character on line 1 col 1: expected "8334", got "48384"

Test 8

Subtask: 2, 3, 4, 5, 6

Verdict: WRONG ANSWER

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

correct output
`44100` view save

user output
`160000` view save

Feedback: Incorrect character on line 1 col 1: expected "44100", got "160000"

Test 9

Subtask: 2, 3, 4, 5, 6

Verdict: WRONG ANSWER

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

correct output
`18` view save

user output
`24` view save

Feedback: Incorrect character on line 1 col 1: expected "18", got "24"

Test 10

Subtask: 3, 4, 5, 6

Verdict: WRONG ANSWER

input
`50 GRGREEEGREGXRXXEGXXREXGRRRGRRR...` view save

correct output
`1584665` view save

user output
`6250000` view save

Feedback: Incorrect character on line 1 col 1: expected "1584665", got "6250000"

Test 11

Subtask: 3, 4, 5, 6

Verdict: WRONG ANSWER

input
`50 AITIISJUHCCRZNKSDCNQKYSQRINFWJ...` view save

correct output
`1077746` view save

user output
`5647152` view save

Feedback: Incorrect character on line 1 col 1: expected "1077746", got "5647152"

Test 12

Subtask: 3, 4, 5, 6

Verdict: WRONG ANSWER

input
`50 OOOOOOOOOOOOOOOOOOOOOOOOOOOOOO...` view save

correct output
`1625625` view save

user output
`6250000` view save

Feedback: Incorrect character on line 1 col 1: expected "1625625", got "6250000"

Test 13

Subtask: 3, 4, 5, 6

Verdict: WRONG ANSWER

input
`50 FFFFFFFFFFFFFFFFFFFFFFFFFFFFFF...` view save

correct output
`1680` view save

user output
`3024` view save

Feedback: Incorrect character on line 1 col 1: expected "1680", got "3024"

Test 14

Subtask: 4, 5, 6

Verdict: WRONG ANSWER

input
`100 NNCMDCDDCCNNNDNCMMNCDCDCCDCDNM...` view save

correct output
`25325366` view save

user output
`100000000` view save

Feedback: Incorrect character on line 1 col 1: expected "25325366", got "100000000"

Test 15

Subtask: 4, 5, 6

Verdict: WRONG ANSWER

input
`100 LIMQQIHASECROEVILNVULGWZJPPKOG...` view save

correct output
`22342463` view save

user output
`100000000` view save

Feedback: Incorrect character on line 1 col 1: expected "22342463", got "100000000"

Test 16

Subtask: 4, 5, 6

Verdict: WRONG ANSWER

input
`100 TTTTTTTTTTTTTTTTTTTTTTTTTTTTTT...` view save

correct output
`25502500` view save

user output
`100000000` view save

Feedback: Incorrect character on line 1 col 1: expected "25502500", got "100000000"

Test 17

Subtask: 4, 5, 6

Verdict: WRONG ANSWER

input
`100 QXQQQQQQQQQQQQQQQQQQQQQQQQQQQQ...` view save

correct output
`25650` view save

user output
`150696` view save

Feedback: Incorrect character on line 1 col 1: expected "25650", got "150696"

Test 18

Subtask: 5, 6

Verdict: WRONG ANSWER

input
`200 NAANANMMKNKKAKMKMAKNKMNKMMNNAA...` view save

correct output
`403292767` view save

user output
`1600000000` view save

Feedback: Incorrect character on line 1 col 1: expected "403292767", got "1600000000"

Test 19

Subtask: 5, 6

Verdict: WRONG ANSWER

input
`200 OMYWATTLURKQPTKEFMGGYAOONXWVSC...` view save

correct output
`388111321` view save

user output
`1600000000` view save

Feedback: Incorrect character on line 1 col 1: expected "388111321", got "1600000000"

Test 20

Subtask: 5, 6

Verdict: WRONG ANSWER

input
`200 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCC...` view save

correct output
`404010000` view save

user output
`1600000000` view save

Feedback: Incorrect character on line 1 col 1: expected "404010000", got "1600000000"

Test 21

Subtask: 5, 6

Verdict: WRONG ANSWER

input
`200 LLLLLLLLLLLLLLLLLHLLLLLLLLLLLL...` view save

correct output
`14159445` view save

user output
`161406840` view save

Feedback: Incorrect character on line 1 col 2: expected "14159445", got "161406840"

Test 22

Subtask: 6

Verdict: WRONG ANSWER

input
`500 VVHWVUHVHUWWWVUUUWVUUHUUWHWUVW...` view save

correct output
`15683003812` view save

user output
`-1924509440` view save

Feedback: Incorrect character on line 1 col 1: expected "15683003812", got "-1924509440"

Test 23

Subtask: 6

Verdict: WRONG ANSWER

input
`500 OIMZGEQSBMBDSDXSWRFNKSGFEBBTJE...` view save

correct output
`15575906951` view save

user output
`-1924509440` view save

Feedback: Incorrect character on line 1 col 1: expected "15575906951", got "-1924509440"

Test 24

Subtask: 6

Verdict: WRONG ANSWER

input
`500 IIIIIIIIIIIIIIIIIIIIIIIIIIIIII...` view save

correct output
`15687562500` view save

user output
`-1924509440` view save

Feedback: Incorrect character on line 1 col 1: expected "15687562500", got "-1924509440"

Test 25

Subtask: 6

Verdict: WRONG ANSWER

input
`500 WWWWWWWWWWWWWWWWWWWWWWWWWWWWWW...` view save

correct output
`3058970930` view save

user output
`931977152` view save

Feedback: Incorrect character on line 1 col 1: expected "3058970930", got "931977152"

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 (DLPS)