oj.uz

Submission #106515

# Submission time Handle Problem Language Result Execution time Memory
106515 2019-04-19T02:26:07 Z bert30702 Circle selection (APIO18_circle_selection) C++17
0 / 100
 3000 ms 21248 KB 
#include <bits/stdc++.h>
#define pii pair<int, int>
#define F first
#define S second
#define X real()
#define Y imag()
using namespace std;
typedef complex<long double> C;
const int MX = 3e5 + 100;
const double EPS = 1e-5;
struct circle { C p; int r, i; } v[MX];
int ans[MX];
bool touch(int a, int b) {
	return !ans[v[b].i] and abs(v[b].p - v[a].p) - EPS <= v[a].r + v[b].r;
}
main () {
	srand(time(0));
	int n; cin >> n;
	for(int i = 1; i <= n; i ++) {
		int x, y, r; cin >> x >> y >> r;
		v[i] = {{x, y}, r, i};
	}
	int ang = rand();
	for(int i = 1; i <= n; i ++) v[i].p *= C{cos(ang), sin(ang)};
	sort(v + 1, v + 1 + n, [](circle a, circle b) { return a.p.X < b.p.X; });
	priority_queue<pair<int, pii> > pq;
	for(int i = 1; i <= n; i ++) pq.push({v[i].r, {-v[i].i, -i}});
	while(pq.size()) {
		int p = -pq.top().S.S; pq.pop();
		if(ans[v[p].i]) continue;
		int cnta = 0, cntb = 0;
		for(int i = p; i >= 1 and cnta < 500; i --) {
			if(ans[v[i].i]) continue;
			if(touch(p, i)) ans[v[i].i] = v[p].i;
			else cnta ++;
		}
		for(int i = p + 1; i <= n and cntb < 500; i ++) {
			if(ans[v[i].i]) continue;
			if(touch(p, i)) ans[v[i].i] = v[p].i;
			else cntb ++;
		} 
	}
	for(int i = 1; i <= n; i ++) cout << ans[i] << ' ';
}
/*
11
9 9 2
13 2 1
11 8 2
3 3 2
3 12 1
12 14 1
9 8 5
2 8 2
5 2 1
14 4 2
14 14 1
*/

Compilation message

circle_selection.cpp:16:7: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main () {
       ^
circle_selection.cpp: In function 'int main()':
circle_selection.cpp:21:23: warning: narrowing conversion of 'x' from 'int' to 'long double' inside { } [-Wnarrowing]
   v[i] = {{x, y}, r, i};
                       ^
circle_selection.cpp:21:23: warning: narrowing conversion of 'y' from 'int' to 'long double' inside { } [-Wnarrowing]

Subtask #1
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 14464 KB Output is correct
2 Correct 15 ms 14416 KB Output is correct
3 Correct 16 ms 14464 KB Output is correct
4 Correct 14 ms 14464 KB Output is correct
5 Correct 15 ms 14464 KB Output is correct
6 Correct 15 ms 14464 KB Output is correct
7 Correct 16 ms 14464 KB Output is correct
8 Correct 16 ms 14464 KB Output is correct
9 Correct 15 ms 14464 KB Output is correct
10 Correct 14 ms 14464 KB Output is correct
11 Correct 18 ms 14464 KB Output is correct
12 Correct 15 ms 14464 KB Output is correct
13 Correct 15 ms 14464 KB Output is correct
14 Correct 15 ms 14464 KB Output is correct
15 Correct 14 ms 14380 KB Output is correct
16 Correct 20 ms 14464 KB Output is correct
17 Correct 16 ms 14464 KB Output is correct
18 Correct 20 ms 14464 KB Output is correct
19 Correct 23 ms 14588 KB Output is correct
20 Correct 27 ms 14592 KB Output is correct
21 Incorrect 22 ms 14584 KB Output isn't correct
22 Halted 0 ms 0 KB -

Subtask #2
0 / 12.0

# Verdict Execution time Memory Grader output
1 Incorrect 637 ms 21248 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 14464 KB Output is correct
2 Execution timed out 3003 ms 16236 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3012 ms 20716 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 14464 KB Output is correct
2 Correct 15 ms 14416 KB Output is correct
3 Correct 16 ms 14464 KB Output is correct
4 Correct 14 ms 14464 KB Output is correct
5 Correct 15 ms 14464 KB Output is correct
6 Correct 15 ms 14464 KB Output is correct
7 Correct 16 ms 14464 KB Output is correct
8 Correct 16 ms 14464 KB Output is correct
9 Correct 15 ms 14464 KB Output is correct
10 Correct 14 ms 14464 KB Output is correct
11 Correct 18 ms 14464 KB Output is correct
12 Correct 15 ms 14464 KB Output is correct
13 Correct 15 ms 14464 KB Output is correct
14 Correct 15 ms 14464 KB Output is correct
15 Correct 14 ms 14380 KB Output is correct
16 Correct 20 ms 14464 KB Output is correct
17 Correct 16 ms 14464 KB Output is correct
18 Correct 20 ms 14464 KB Output is correct
19 Correct 23 ms 14588 KB Output is correct
20 Correct 27 ms 14592 KB Output is correct
21 Incorrect 22 ms 14584 KB Output isn't correct
22 Halted 0 ms 0 KB -

Subtask #6
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 14464 KB Output is correct
2 Correct 15 ms 14416 KB Output is correct
3 Correct 16 ms 14464 KB Output is correct
4 Correct 14 ms 14464 KB Output is correct
5 Correct 15 ms 14464 KB Output is correct
6 Correct 15 ms 14464 KB Output is correct
7 Correct 16 ms 14464 KB Output is correct
8 Correct 16 ms 14464 KB Output is correct
9 Correct 15 ms 14464 KB Output is correct
10 Correct 14 ms 14464 KB Output is correct
11 Correct 18 ms 14464 KB Output is correct
12 Correct 15 ms 14464 KB Output is correct
13 Correct 15 ms 14464 KB Output is correct
14 Correct 15 ms 14464 KB Output is correct
15 Correct 14 ms 14380 KB Output is correct
16 Correct 20 ms 14464 KB Output is correct
17 Correct 16 ms 14464 KB Output is correct
18 Correct 20 ms 14464 KB Output is correct
19 Correct 23 ms 14588 KB Output is correct
20 Correct 27 ms 14592 KB Output is correct
21 Incorrect 22 ms 14584 KB Output isn't correct
22 Halted 0 ms 0 KB -