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답안 #773069

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
773069 2023-07-04T14:41:39 Z xetrk 원 고르기 (APIO18_circle_selection) C++14
0 / 100
 3000 ms 35328 KB 
#pragma warning(disable:4996)

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


typedef long long ll;
typedef long double ld;

int n;

vector<vector<ll>> circle;

vector<pair<ll, int>> sortRadius, sortX, sortY;

int ans[301000];

inline ll GetDist(ll x1, ll y1, ll x2, ll y2)
{
	// 아 좌표값 마이너스도 들어오네
	ll xx = max(x1, x2) - min(x1, x2);
	ll yy = max(y1, y2) - min(y1, y2);
	return (xx * xx) + (yy * yy);
}



bool comp(const pair<ll,int>& a, const pair<ll,int>& b)
{
	if (a.first == b.first)
		return a.second < b.second;
	return a.first < b.first;
}

bool compSort(const pair<ll, int>& a, const pair<ll, int>& b)
{
	if (a.first == b.first)
		return a.second < b.second;
	
	return a.first > b.first;
}

int main()
{
	ll x, y, r, r2;
	scanf("%d", &n);

	for (int i = 0; i < n; i++)
	{
		scanf("%lld %lld %lld", &x, &y, &r);
	//	x = i + 1, y = i + 1, r = (i + 1)*3;
		circle.push_back({ x,y,r });
		sortRadius.push_back({ r,i });
		sortX.push_back({ x,i });
		sortY.push_back({ y,i });
	}

	sort(sortRadius.begin(), sortRadius.end(), compSort);
	sort(sortX.begin(), sortX.end());
	sort(sortY.begin(), sortY.end());


	int cur, curcmp;
	int xMin, xMax, yMin, yMax;

	for (int curDelete = 0; curDelete < n; curDelete++)
	{
		cur = sortRadius[curDelete].second;
		if (ans[cur])
			continue;


		x = circle[cur][0], y = circle[cur][1], r = circle[cur][2];
		r2 = r * 3 + 2;
		
		// a이하를 찾아야하는데 lower bound는  a이상인걸 찾으니까.. 근데 그 이하인걸 찾아야하니 1빼줌
		xMin = lower_bound(sortX.begin(), sortX.end(), pair<ll, int>(x - r2, -1), comp) - sortX.begin();
		xMax = upper_bound(sortX.begin(), sortX.end(), pair<ll, int>(x + r2, 301000), comp) - sortX.begin();

		yMin = lower_bound(sortY.begin(), sortY.end(), pair<ll, int>(y - r2, -1), comp) - sortY.begin();
		yMax = upper_bound(sortY.begin(), sortY.end(), pair<ll, int>(y + r2, 301000), comp) - sortY.begin();

		xMin--;
		yMin--;

		if (xMin < 0) xMin = 0;
		if (yMin < 0) yMin = 0;

		if (xMin >= n) xMin = n - 1;
		if (yMin >= n) yMin = n - 1;
		if (xMax >= n) xMax = n - 1;
		if (yMax >= n) yMax = n - 1;

		xMin = 0, yMin = 0, xMax = n - 1, yMax = n - 1;


		ans[cur] = cur;

		if (xMax - xMin < yMax - yMin)
		{
			curcmp = sortX[max(0, xMin - 1)].second;
			int beforeX = circle[curcmp][0];

			
			for (int i = xMin; i >= 0; i--)
			{
				curcmp = sortX[i].second;
				if (beforeX > circle[curcmp][0])
					break;
				if (ans[curcmp]) continue;
				if (GetDist(x, y, circle[curcmp][0], circle[curcmp][1]) <= (ll)(((r + circle[curcmp][2]) * (r + circle[curcmp][2]))))
					ans[curcmp] = cur;

			}
			for (int i = xMin; i <= xMax; i++)
			{
				curcmp = sortX[i].second;
				if (ans[curcmp]) continue;
				if (GetDist(x, y, circle[curcmp][0], circle[curcmp][1]) <= (ll)(((r + circle[curcmp][2]) * (r + circle[curcmp][2]))))
					ans[curcmp] = cur;
			}
		}
		else
		{
			curcmp = sortY[max(0, yMin - 1)].second;
			int beforeY = circle[curcmp][1];


			for (int i = yMin; i >= 0; i--)
			{
				curcmp = sortY[i].second;
				if (beforeY > circle[curcmp][1])
					break;
				if (ans[curcmp]) continue;
				if (GetDist(x, y, circle[curcmp][0], circle[curcmp][1]) <= (ll)(((r + circle[curcmp][2]) * (r + circle[curcmp][2]))))
					ans[curcmp] = cur;

			}


			for (int i = yMin; i <= yMax; i++)
			{
				curcmp = sortY[i].second;
				if (ans[curcmp]) continue;
				if (GetDist(x, y, circle[curcmp][0], circle[curcmp][1]) <= (ll)(((r + circle[curcmp][2]) * (r + circle[curcmp][2]))))
					ans[curcmp] = cur;
			}
		}
	}

	for (int i = 0; i < n; i++)
		printf("%d ", ans[i]+1);

	return 0;
}

Compilation message

circle_selection.cpp:1: warning: ignoring '#pragma warning ' [-Wunknown-pragmas]
    1 | #pragma warning(disable:4996)
      | 
circle_selection.cpp: In function 'int main()':
circle_selection.cpp:46:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   46 |  scanf("%d", &n);
      |  ~~~~~^~~~~~~~~~
circle_selection.cpp:50:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   50 |   scanf("%lld %lld %lld", &x, &y, &r);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 304 KB Output is correct
3 Incorrect 0 ms 212 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #2
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 216 ms 35276 KB Output is correct
2 Correct 204 ms 35192 KB Output is correct
3 Correct 201 ms 34944 KB Output is correct
4 Correct 198 ms 35328 KB Output is correct
5 Execution timed out 3055 ms 34212 KB Time limit exceeded
6 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Execution timed out 3051 ms 12036 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 3044 ms 34388 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 304 KB Output is correct
3 Incorrect 0 ms 212 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #6
0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 304 KB Output is correct
3 Incorrect 0 ms 212 KB Output isn't correct
4 Halted 0 ms 0 KB -