CSES - Datatähti 2022 alku - Results
Submission details
Task:Spiraali (Spiral)
Sender:mbezirgan
Submission time:2021-10-04 19:22:26
Language:C++17
Status:READY
Result:35
Feedback
groupverdictscore
#1ACCEPTED15
#2ACCEPTED20
#30
Test results
testverdicttimegroup
#1ACCEPTED0.01 s1details
#2ACCEPTED0.90 s2details
#30.01 s3details

Code

#include <iostream>

struct Int2
{
	int x, y;
};

int GetSpiralValue(int size, const Int2& pos)
{
	// Bounds
	int x1 = 1;
	int x2 = size;
	int y1 = 0;
	int y2 = size;

	int x = 0, y = 0;
	char direction = 0;

	for (int i = 1; i <= size * size; i++)
	{
		if (pos.x == x && pos.y == y)
			return i;

		if (direction == 0)
		{
			y++;
			if (y == y2)
			{
				direction = 1;
				y2--;
				y--;
				x++;
			}
		}
		else if (direction == 1)
		{
			x++;
			if (x == x2)
			{
				direction = 2;
				x2--;
				y--;
				x--;
			}
		}
		else if (direction == 2)
		{
			y--;
			if (y < y1)
			{
				direction = 3;
				y1++;
				y++;
				x--;
			}
		}
		else if (direction == 3)
		{
			x--;
			if (x < x1)
			{
				direction = 0;
				x1++;
				y++;
				x++;
			}
		}
	}

	return -1;
}

int main()
{
	int n, t;
	std::cin >> n;
	std::cin >> t;
	
	Int2* positions = new Int2[t];

	for (int i = 0; i < t; i++)
	{
		int x, y;
		std::cin >> x;
		std::cin >> y;

		positions[i] = { y - 1, x - 1 };
	}

	for (int i = 0; i < t; i++)
	{
		auto& pos = positions[i];

		std::cout << GetSpiralValue(n, pos) << "\n";
	}

	delete[] positions;
}

Test details

Test 1

Group: 1

Verdict: ACCEPTED

input
10 100
1 1
1 2
1 3
1 4
...

correct output
1
36
35
34
33
...

user output
1
36
35
34
33
...

Test 2

Group: 2

Verdict: ACCEPTED

input
1000 1000
371 263
915 322
946 880
53 738
...

correct output
773533
312166
206053
200080
593922
...

user output
773533
312166
206053
200080
593922
...

Test 3

Group: 3

Verdict:

input
1000000000 1000
177757853 827347032
409613589 419171337
739269360 256524697
328695530 896842209
...

correct output
571375684522141210
967321186816598569
762879105851175000
370065046779516790
936897883750373771
...

user output
-1
-1
-1
-1
-1
...