oj.uz

Submission #103221

# Submission time Handle Problem Language Result Execution time Memory
103221 2019-03-29T08:50:15 Z E869120 Circle selection (APIO18_circle_selection) C++14
30 / 100
 3000 ms 555820 KB 
#include <iostream>
#include <vector>
#include <queue>
#include <ctime>
using namespace std;
#pragma warning (disable: 4996)

int cntv = 0;

struct Node {
	int val, l, r; vector<int> num;
};

vector<Node>vec;
Node BASE = { 0, -1, -1, {} };

class SegmentTree {
public:
	Node BASE; vector<int>V; unsigned int lx, ly, rx, ry; int size_;

	void init() {
		size_ = 1;
	}
	void add(long long px, long long py, int NN) {
		int cx = 0;
		for (int i = 61; i >= 0; i--) {
			vec[cx].val += 1;
			if ((i & 1) == 1) {
				int dep = (i >> 1);
				if (px >= (1LL << dep)) {
					if (vec[cx].r == -1) { vec[cx].r = size_; size_++; }
					cx = vec[cx].r; px -= (1LL << dep);
				}
				else {
					if (vec[cx].l == -1) { vec[cx].l = size_; size_++; }
					cx = vec[cx].l;
				}
			}
			else {
				int dep = (i >> 1);
				if (py >= (1LL << dep)) {
					if (vec[cx].r == -1) { vec[cx].r = size_; size_++; }
					cx = vec[cx].r; py -= (1LL << dep);
				}
				else {
					if (vec[cx].l == -1) { vec[cx].l = size_; size_++; }
					cx = vec[cx].l;
				}
			}
		}
		vec[cx].val++; vec[cx].num.push_back(NN);
	}
	void lose(long long px, long long py, int NN) {
		int cx = 0;
		for (int i = 61; i >= 0; i--) {
			vec[cx].val -= 1;
			if ((i & 1) == 1) {
				int dep = (i >> 1);
				if (px >= (1LL << dep)) {
					if (vec[cx].r == -1) { vec[cx].r = size_; size_++; }
					cx = vec[cx].r; px -= (1LL << dep);
				}
				else {
					if (vec[cx].l == -1) { vec[cx].l = size_; size_++; }
					cx = vec[cx].l;
				}
			}
			else {
				int dep = (i >> 1);
				if (py >= (1LL << dep)) {
					if (vec[cx].r == -1) { vec[cx].r = size_; size_++; }
					cx = vec[cx].r; py -= (1LL << dep);
				}
				else {
					if (vec[cx].l == -1) { vec[cx].l = size_; size_++; }
					cx = vec[cx].l;
				}
			}
		}
		vec[cx].val--; vec[cx].num.clear();
	}
	void query_(unsigned int ax, unsigned int ay, unsigned int bx, unsigned int by, int dep, int u) {
		if (vec[u].val == 0) return;
		if (rx <= ax || bx <= lx || ry <= ay || by <= ly) return;
		if (dep == 0) {
			for (int i : vec[u].num) V.push_back(i);
			return;
		}
		cntv++;
		if (dep % 2 == 0) {
			if (vec[u].l >= 0) query_(ax, ay, (ax + bx) >> 1, by, dep - 1, vec[u].l);
			if (vec[u].r >= 0) query_((ax + bx) >> 1, ay, bx, by, dep - 1, vec[u].r);
		}
		else {
			if (vec[u].l >= 0) query_(ax, ay, bx, (ay + by) >> 1, dep - 1, vec[u].l);
			if (vec[u].r >= 0) query_(ax, (ay + by) >> 1, bx, by, dep - 1, vec[u].r);
		}
	}
	vector<int> query(long long LX, long long LY, long long RX, long long RY) {
		LX = max(LX, 0LL); LY = max(LY, 0LL); RX = min(RX, (1LL << 31)); RY = min(RY, (1LL << 31));
		lx = LX; ly = LY; rx = RX; ry = RY;
		V.clear();
		query_(0, 0, (1LL << 31), (1LL << 31), 62, 0);
		return V;
	}
};

long long N, X[1 << 19], Y[1 << 19], R[1 << 19], score[1 << 19];
bool used[1 << 19];

long long dist(int p1, int p2) {
	return (X[p1] - X[p2]) * (X[p1] - X[p2]) + abs(Y[p1] - Y[p2]) * abs(Y[p1] - Y[p2]);
}

void solve_Jury() {
	while (true) {
		int maxn = -1, id = -1;
		for (int i = 1; i <= N; i++) {
			if (used[i] == true) continue;
			if (maxn < R[i]) { maxn = R[i]; id = i; }
		}

		if (id == -1) break;

		for (int i = 1; i <= N; i++) {
			if (used[i] == true) continue;
			if (dist(id, i) <= (R[i] + R[id]) * (R[i] + R[id])) { used[i] = true; score[i] = id; }
		}
	}
}

bool uses[1 << 19]; SegmentTree Z;

void solve_subtasks() {
	if (N <= 10000) vec.resize(N * 64, BASE);
	else if (N <= 100000) vec.resize(N * 50, BASE);
	else vec.resize(N * 45, BASE);

	priority_queue<pair<long long, int>, vector<pair<long long, int>>, less<pair<long long, int>>>Q;
	Z.init();
	for (int i = 1; i <= N; i++) Q.push(make_pair(R[i], -i));
	for (int i = 1; i <= N; i++) Z.add(X[i], Y[i], i);
	
	while (!Q.empty()) {
		int pos = -Q.top().second;
		vector<int>E = Z.query(X[pos] - 2LL * R[pos], Y[pos] - 2LL * R[pos], X[pos] + 2LL * R[pos] + 1LL, Y[pos] + 2LL * R[pos] + 1LL);
		
		for (int i = 0; i < E.size(); i++) {
			if (dist(pos, E[i]) <= 1LL * (R[pos] + R[E[i]]) * (R[pos] + R[E[i]])) {
				Z.lose(X[E[i]], Y[E[i]], E[i]);
				used[E[i]] = true;
				score[E[i]] = pos;
			}
		}
		while (!Q.empty()) { int pos = -Q.top().second; if (used[pos] == false) break; Q.pop(); }
	}
	return;
}

long long Rand() {
	long long s = 1, t = 0;
	for (int i = 0; i < 3; i++) { t += (rand() % 1024)*s; s *= 1024; }
	return t;
}

int main() {
	srand((unsigned)time(NULL));
	scanf("%lld", &N);
	for (int i = 1; i <= N; i++) {
		scanf("%lld%lld%lld", &X[i], &Y[i], &R[i]);
		X[i] += (1LL << 30); Y[i] += (1LL << 30);
	}

	if (N <= 2) {
		solve_Jury();
	}

	else {
		solve_subtasks();
	}

	for (int i = 1; i <= N; i++) {
		if (i >= 2) printf(" ");
		printf("%lld", score[i]);
	}
	printf("\n");
	return 0;
}

Compilation message

circle_selection.cpp:6:0: warning: ignoring #pragma warning  [-Wunknown-pragmas]
 #pragma warning (disable: 4996)
 
circle_selection.cpp: In function 'void solve_subtasks()':
circle_selection.cpp:148:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int i = 0; i < E.size(); i++) {
                   ~~^~~~~~~~~~
circle_selection.cpp: In function 'int main()':
circle_selection.cpp:168:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld", &N);
  ~~~~~^~~~~~~~~~~~
circle_selection.cpp:170:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld%lld%lld", &X[i], &Y[i], &R[i]);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 3 ms 640 KB Output is correct
7 Correct 3 ms 640 KB Output is correct
8 Correct 2 ms 640 KB Output is correct
9 Correct 3 ms 640 KB Output is correct
10 Correct 3 ms 640 KB Output is correct
11 Correct 2 ms 640 KB Output is correct
12 Correct 3 ms 640 KB Output is correct
13 Correct 4 ms 640 KB Output is correct
14 Correct 3 ms 640 KB Output is correct
15 Correct 3 ms 640 KB Output is correct
16 Correct 9 ms 2944 KB Output is correct
17 Correct 7 ms 2944 KB Output is correct
18 Correct 8 ms 2944 KB Output is correct
19 Correct 38 ms 13432 KB Output is correct
20 Correct 40 ms 13320 KB Output is correct
21 Correct 37 ms 13312 KB Output is correct
22 Correct 40 ms 13312 KB Output is correct
23 Correct 41 ms 13312 KB Output is correct
24 Correct 39 ms 13304 KB Output is correct
25 Correct 37 ms 13304 KB Output is correct
26 Correct 38 ms 13304 KB Output is correct

Subtask #2
0 / 12.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3154 ms 555820 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 384 KB Output is correct
2 Correct 978 ms 204176 KB Output is correct
3 Correct 2938 ms 552756 KB Output is correct
4 Execution timed out 3049 ms 552688 KB Time limit exceeded
5 Halted 0 ms 0 KB -

Subtask #4
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 2510 ms 552760 KB Output is correct
2 Correct 2327 ms 552764 KB Output is correct
3 Correct 2240 ms 552788 KB Output is correct
4 Correct 2379 ms 552784 KB Output is correct
5 Correct 2459 ms 552732 KB Output is correct
6 Correct 2243 ms 552660 KB Output is correct

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 3 ms 640 KB Output is correct
7 Correct 3 ms 640 KB Output is correct
8 Correct 2 ms 640 KB Output is correct
9 Correct 3 ms 640 KB Output is correct
10 Correct 3 ms 640 KB Output is correct
11 Correct 2 ms 640 KB Output is correct
12 Correct 3 ms 640 KB Output is correct
13 Correct 4 ms 640 KB Output is correct
14 Correct 3 ms 640 KB Output is correct
15 Correct 3 ms 640 KB Output is correct
16 Correct 9 ms 2944 KB Output is correct
17 Correct 7 ms 2944 KB Output is correct
18 Correct 8 ms 2944 KB Output is correct
19 Correct 38 ms 13432 KB Output is correct
20 Correct 40 ms 13320 KB Output is correct
21 Correct 37 ms 13312 KB Output is correct
22 Correct 40 ms 13312 KB Output is correct
23 Correct 41 ms 13312 KB Output is correct
24 Correct 39 ms 13304 KB Output is correct
25 Correct 37 ms 13304 KB Output is correct
26 Correct 38 ms 13304 KB Output is correct
27 Correct 84 ms 26376 KB Output is correct
28 Correct 85 ms 26372 KB Output is correct
29 Correct 90 ms 26328 KB Output is correct
30 Correct 79 ms 26244 KB Output is correct
31 Correct 69 ms 26228 KB Output is correct
32 Correct 78 ms 26248 KB Output is correct
33 Correct 803 ms 204944 KB Output is correct
34 Correct 726 ms 204904 KB Output is correct
35 Correct 828 ms 204968 KB Output is correct
36 Correct 977 ms 203968 KB Output is correct
37 Correct 823 ms 203972 KB Output is correct
38 Correct 874 ms 203948 KB Output is correct
39 Execution timed out 3106 ms 204532 KB Time limit exceeded
40 Halted 0 ms 0 KB -

Subtask #6
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 3 ms 640 KB Output is correct
7 Correct 3 ms 640 KB Output is correct
8 Correct 2 ms 640 KB Output is correct
9 Correct 3 ms 640 KB Output is correct
10 Correct 3 ms 640 KB Output is correct
11 Correct 2 ms 640 KB Output is correct
12 Correct 3 ms 640 KB Output is correct
13 Correct 4 ms 640 KB Output is correct
14 Correct 3 ms 640 KB Output is correct
15 Correct 3 ms 640 KB Output is correct
16 Correct 9 ms 2944 KB Output is correct
17 Correct 7 ms 2944 KB Output is correct
18 Correct 8 ms 2944 KB Output is correct
19 Correct 38 ms 13432 KB Output is correct
20 Correct 40 ms 13320 KB Output is correct
21 Correct 37 ms 13312 KB Output is correct
22 Correct 40 ms 13312 KB Output is correct
23 Correct 41 ms 13312 KB Output is correct
24 Correct 39 ms 13304 KB Output is correct
25 Correct 37 ms 13304 KB Output is correct
26 Correct 38 ms 13304 KB Output is correct
27 Execution timed out 3154 ms 555820 KB Time limit exceeded
28 Halted 0 ms 0 KB -