CSES - Datatähti 2025 alku

Submission details
Task:	Niitty
Sender:	DLPS
Submission time:	2024-11-10 22:54:33 +0200
Language:	C++ (C++20)
Status:	READY
Result:	33

Feedback
group	verdict	score
#1	ACCEPTED	4
#2	ACCEPTED	6
#3	ACCEPTED	10
#4	ACCEPTED	13
#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	0.01 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	0.02 s	3, 4, 5, 6	details
#11	ACCEPTED	0.02 s	3, 4, 5, 6	details
#12	ACCEPTED	0.02 s	3, 4, 5, 6	details
#13	ACCEPTED	0.01 s	3, 4, 5, 6	details
#14	ACCEPTED	0.14 s	4, 5, 6	details
#15	ACCEPTED	0.16 s	4, 5, 6	details
#16	ACCEPTED	0.16 s	4, 5, 6	details
#17	ACCEPTED	0.01 s	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	ACCEPTED	0.09 s	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.cpp:3:25: warning: extra tokens at end of #include directive
    3 | #include "bits/stdc++.h";
      |                         ^
input/code.cpp:4:25: warning: extra tokens at end of #include directive
    4 | #include "unordered_map";
      |                         ^
input/code.cpp: In function 'int main()':
input/code.cpp:121:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  121 |                 for (int x = 0; x < row.size(); ++x)
      |                                 ~~^~~~~~~~~~~~

Code

#pragma GCC optimize("O3")

#include "bits/stdc++.h";
#include "unordered_map";

using namespace std;

int preCalcMap[6526026];
int flowerCounts[26] = { 0 };

// 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];

			int curI = (y + 1) * 501 + x + 1;
			int lI = (y + 1) * 501 + x;
			int tI = y * 501 + x + 1;
			int tlI = y * 501 + x;

			for (int i = 0; i < 26; ++i)
			{
				preCalcMap[curI + 251001 * i] = preCalcMap[lI + 251001 * i] + preCalcMap[tI + 251001 * i] - preCalcMap[tlI + 251001 * i] + (flowerType == i);
			}
		}
	}
	int count = 0;
	for (int x1 = 0; x1 < fieldSize; ++x1)
	{
		bool hadSuccessX2 = false;
		for (int x2 = fieldSize - 1; x2 >= x1; x2--)
		{
			lastSolution = -1;
			bool hadSuccessY1 = false;
			for (int y1 = 0; y1 < fieldSize; ++y1)
			{
				int ans = Y2Solver(y1, fieldSize - 1, x1, x2, y1);
				if (ans == 0)
				{
					break;
				}
				else
				{
					count += ans;
					hadSuccessY1 = true;
				}
			}
			if (!hadSuccessY1)
			{
				break;
			}
			else
			{
				hadSuccessX2 = true;
			}
		}
		if (!hadSuccessX2)
		{
			break;
		}
	}
	cout << count;
}

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: ACCEPTED

input
`100 NNCMDCDDCCNNNDNCMMNCDCDCCDCDNM...` view save

correct output
`25325366` view save

user output
`25325366` view save

Test 15

Group: 4, 5, 6

Verdict: ACCEPTED

input
`100 LIMQQIHASECROEVILNVULGWZJPPKOG...` view save

correct output
`22342463` view save

user output
`22342463` view save

Test 16

Group: 4, 5, 6

Verdict: ACCEPTED

input
`100 TTTTTTTTTTTTTTTTTTTTTTTTTTTTTT...` view save

correct output
`25502500` view save

user output
`25502500` view save

Test 17

Group: 4, 5, 6

Verdict: ACCEPTED

input
`100 QXQQQQQQQQQQQQQQQQQQQQQQQQQQQQ...` view save

correct output
`25650` view save

user output
`25650` view save

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: ACCEPTED

input
`200 LLLLLLLLLLLLLLLLLHLLLLLLLLLLLL...` view save

correct output
`14159445` view save

user output
`14159445` view save

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 (DLPS)