oj.uz

Submission #103202

# Submission time Handle Problem Language Result Execution time Memory
103202 2019-03-29T08:16:28 Z E869120 Circle selection (APIO18_circle_selection) C++14
7 / 100
 3000 ms 275908 KB 
#include <iostream>
#include <vector>
#include <queue>
using namespace std;
#pragma warning (disable: 4996)

struct Node {
	int val, num, l, r;
};

class SegmentTree {
public:
	vector<Node>vec; vector<int>V; long long lx, ly, rx, ry;

	void init() {
		vec.push_back(Node{ 0, 0, -1, -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 >= 31) {
				int dep = i - 31;
				if (px >= (1LL << dep)) {
					if (vec[cx].r == -1) { vec[cx].r = vec.size(); vec.push_back(Node{ 0, 0, -1,-1 }); }
					cx = vec[cx].r; px -= (1LL << dep);
				}
				else {
					if (vec[cx].l == -1) { vec[cx].l = vec.size(); vec.push_back(Node{ 0, 0, -1,-1 }); }
					cx = vec[cx].l;
				}
			}
			else {
				int dep = i;
				if (py >= (1LL << dep)) {
					if (vec[cx].r == -1) { vec[cx].r = vec.size(); vec.push_back(Node{ 0, 0, -1,-1 }); }
					cx = vec[cx].r; py -= (1LL << dep);
				}
				else {
					if (vec[cx].l == -1) { vec[cx].l = vec.size(); vec.push_back(Node{ 0, 0, -1,-1 }); }
					cx = vec[cx].l;
				}
			}
		}
		vec[cx].val++; vec[cx].num = 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 >= 31) {
				int dep = i - 31;
				if (px >= (1LL << dep)) {
					if (vec[cx].r == -1) { vec[cx].r = vec.size(); vec.push_back(Node{ 0, 0, -1,-1 }); }
					cx = vec[cx].r; px -= (1LL << dep);
				}
				else {
					if (vec[cx].l == -1) { vec[cx].l = vec.size(); vec.push_back(Node{ 0, 0, -1,-1 }); }
					cx = vec[cx].l;
				}
			}
			else {
				int dep = i;
				if (py >= (1LL << dep)) {
					if (vec[cx].r == -1) { vec[cx].r = vec.size(); vec.push_back(Node{ 0, 0, -1,-1 }); }
					cx = vec[cx].r; py -= (1LL << dep);
				}
				else {
					if (vec[cx].l == -1) { vec[cx].l = vec.size(); vec.push_back(Node{ 0, 0, -1,-1 }); }
					cx = vec[cx].l;
				}
			}
		}
		vec[cx].val--; vec[cx].num = 0;
	}
	void query_(long long ax, long long ay, long long bx, long long by, int dep, int u) {
		if (vec[u].val == 0) return;
		if (rx <= ax || bx <= lx || ry <= ay || by <= ly) return;
		if (dep == 0) {
			V.push_back(vec[u].num);
			return;
		}

		if (dep >= 32) {
			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() {
	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(); }
	}
}

int main() {
	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 <= 5000) {
		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:5:0: warning: ignoring #pragma warning  [-Wunknown-pragmas]
 #pragma warning (disable: 4996)
 
circle_selection.cpp: In function 'void solve_subtasks()':
circle_selection.cpp:138:21: 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:150:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld", &N);
  ~~~~~^~~~~~~~~~~~
circle_selection.cpp:151:38: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  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); }
                                 ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 3 ms 304 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 3 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 3 ms 384 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 3 ms 384 KB Output is correct
12 Correct 3 ms 384 KB Output is correct
13 Correct 3 ms 384 KB Output is correct
14 Correct 3 ms 384 KB Output is correct
15 Correct 2 ms 384 KB Output is correct
16 Correct 3 ms 384 KB Output is correct
17 Correct 3 ms 384 KB Output is correct
18 Correct 4 ms 384 KB Output is correct
19 Correct 7 ms 640 KB Output is correct
20 Correct 5 ms 640 KB Output is correct
21 Correct 8 ms 512 KB Output is correct
22 Correct 176 ms 512 KB Output is correct
23 Correct 180 ms 632 KB Output is correct
24 Correct 156 ms 612 KB Output is correct
25 Correct 167 ms 632 KB Output is correct
26 Correct 169 ms 512 KB Output is correct

Subtask #2
0 / 12.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3114 ms 275700 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2143 ms 135860 KB Output is correct
3 Execution timed out 3038 ms 275908 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3029 ms 275820 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 3 ms 304 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 3 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 3 ms 384 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 3 ms 384 KB Output is correct
12 Correct 3 ms 384 KB Output is correct
13 Correct 3 ms 384 KB Output is correct
14 Correct 3 ms 384 KB Output is correct
15 Correct 2 ms 384 KB Output is correct
16 Correct 3 ms 384 KB Output is correct
17 Correct 3 ms 384 KB Output is correct
18 Correct 4 ms 384 KB Output is correct
19 Correct 7 ms 640 KB Output is correct
20 Correct 5 ms 640 KB Output is correct
21 Correct 8 ms 512 KB Output is correct
22 Correct 176 ms 512 KB Output is correct
23 Correct 180 ms 632 KB Output is correct
24 Correct 156 ms 612 KB Output is correct
25 Correct 167 ms 632 KB Output is correct
26 Correct 169 ms 512 KB Output is correct
27 Correct 48 ms 9068 KB Output is correct
28 Correct 52 ms 9068 KB Output is correct
29 Correct 49 ms 9188 KB Output is correct
30 Correct 91 ms 9068 KB Output is correct
31 Correct 61 ms 9068 KB Output is correct
32 Correct 52 ms 9068 KB Output is correct
33 Correct 620 ms 135828 KB Output is correct
34 Correct 615 ms 135764 KB Output is correct
35 Correct 657 ms 135796 KB Output is correct
36 Correct 876 ms 135744 KB Output is correct
37 Correct 929 ms 135820 KB Output is correct
38 Correct 1156 ms 135864 KB Output is correct
39 Execution timed out 3024 ms 12636 KB Time limit exceeded
40 Halted 0 ms 0 KB -

Subtask #6
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 3 ms 304 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 3 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 3 ms 384 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 3 ms 384 KB Output is correct
12 Correct 3 ms 384 KB Output is correct
13 Correct 3 ms 384 KB Output is correct
14 Correct 3 ms 384 KB Output is correct
15 Correct 2 ms 384 KB Output is correct
16 Correct 3 ms 384 KB Output is correct
17 Correct 3 ms 384 KB Output is correct
18 Correct 4 ms 384 KB Output is correct
19 Correct 7 ms 640 KB Output is correct
20 Correct 5 ms 640 KB Output is correct
21 Correct 8 ms 512 KB Output is correct
22 Correct 176 ms 512 KB Output is correct
23 Correct 180 ms 632 KB Output is correct
24 Correct 156 ms 612 KB Output is correct
25 Correct 167 ms 632 KB Output is correct
26 Correct 169 ms 512 KB Output is correct
27 Execution timed out 3114 ms 275700 KB Time limit exceeded
28 Halted 0 ms 0 KB -