oj.uz

Submission #1071002

# Submission time Handle Problem Language Result Execution time Memory
1071002 2024-08-22T23:13:35 Z pawned Circle selection (APIO18_circle_selection) C++17
49 / 100
 3000 ms 82512 KB 
#pragma GCC optimize("O1,O2,O3,Ofast,unroll-loops")

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

#define fi first
#define se second
#define pb push_back
typedef long long ll;
typedef pair<ll, ll> ii;
typedef vector<ll> vi;

const char nl = '\n';

void fastIO() {
	ios::sync_with_stdio(false);
	cin.tie(0);
}

bool intersect(ll x1, ll y1, ll x2, ll y2, ll r1, ll r2) {
	ll dx = abs(x1 - x2);
	ll dy = abs(y1 - y2);
	ll dt = r1 + r2;
	if (dt * dt >= dx * dx + dy * dy)
		return true;
	return false;
}

int main() {
	fastIO();
	int N;
	cin>>N;
	vector<pair<ii, ll>> cr(N);
	// {{x, y}, r}
	set<pair<ii, ii>> all;
	// {{r, -id}, {x, y}}
	map<ll, set<pair<ll, ii>>> allx;	// maps x coord to all {y, {r, id}}
	for (int i = 0; i < N; i++) {
		ll x, y, r;
		cin>>x>>y>>r;
		all.insert({{r, -i}, {x, y}});
		allx[x].insert({y, {r, i}});
	}
	vi par(N, -1);
	int rem = N;
	while (rem > 0) {
		auto it = --all.end();
		ll r = (*it).fi.fi;
		int id = -(*it).fi.se;
		ll x = (*it).se.fi;
		ll y = (*it).se.se;
//		cout<<"at "<<id<<endl;
		// consider all from x in x-2r to x+2r, y in y-2r to r+2r
		auto it2 = allx.lower_bound(x - 2 * r);
		while (it2 != allx.end() && (*it2).fi <= x + 2 * r) {
			// do another search inside
			ll cx = (*it2).fi;
			vector<pair<ll, ii>> toremove;
			auto it3 = allx[cx].lower_bound({y - 2 * r, {-1, -1}});
			while (it3 != allx[cx].end() && (*it3).fi <= y + 2 * r) {
				ll cy = (*it3).fi;
				ll cr = (*it3).se.fi;
				int cid = (*it3).se.se;
				if (intersect(x, y, cx, cy, r, cr)) {
					toremove.pb(*it3);
				}
				it3++;
			}
			for (pair<ll, ii> p : toremove) {
				par[p.se.se] = id;
//				cout<<"erased "<<p.se.se<<endl;
				allx[cx].erase(p);
				all.erase({{p.se.fi, -p.se.se}, {cx, p.fi}});
				rem--;
			}
			it2++;
		}
	}
//	cout<<"ANSWER: ";
	for (int x : par)
		cout<<(x + 1)<<" ";
	cout<<endl;
}

Compilation message

circle_selection.cpp: In function 'int main()':
circle_selection.cpp:63:9: warning: unused variable 'cid' [-Wunused-variable]
   63 |     int cid = (*it3).se.se;
      |         ^~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 604 KB Output is correct
17 Correct 1 ms 604 KB Output is correct
18 Correct 1 ms 604 KB Output is correct
19 Correct 6 ms 1720 KB Output is correct
20 Correct 6 ms 1628 KB Output is correct
21 Correct 8 ms 1640 KB Output is correct
22 Correct 9 ms 1784 KB Output is correct
23 Correct 34 ms 1628 KB Output is correct
24 Correct 7 ms 1628 KB Output is correct
25 Correct 6 ms 1628 KB Output is correct
26 Correct 8 ms 1628 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 763 ms 82256 KB Output is correct
2 Correct 737 ms 82512 KB Output is correct
3 Correct 752 ms 81996 KB Output is correct
4 Correct 756 ms 82260 KB Output is correct
5 Correct 673 ms 72952 KB Output is correct
6 Correct 735 ms 82000 KB Output is correct
7 Correct 730 ms 80412 KB Output is correct
8 Correct 771 ms 81236 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 690 ms 27524 KB Output is correct
3 Correct 2646 ms 82260 KB Output is correct
4 Correct 2792 ms 82076 KB Output is correct
5 Execution timed out 3074 ms 78064 KB Time limit exceeded
6 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1606 ms 82252 KB Output is correct
2 Correct 635 ms 82336 KB Output is correct
3 Execution timed out 3049 ms 80160 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 604 KB Output is correct
17 Correct 1 ms 604 KB Output is correct
18 Correct 1 ms 604 KB Output is correct
19 Correct 6 ms 1720 KB Output is correct
20 Correct 6 ms 1628 KB Output is correct
21 Correct 8 ms 1640 KB Output is correct
22 Correct 9 ms 1784 KB Output is correct
23 Correct 34 ms 1628 KB Output is correct
24 Correct 7 ms 1628 KB Output is correct
25 Correct 6 ms 1628 KB Output is correct
26 Correct 8 ms 1628 KB Output is correct
27 Correct 14 ms 3164 KB Output is correct
28 Correct 11 ms 3164 KB Output is correct
29 Correct 11 ms 3160 KB Output is correct
30 Correct 36 ms 3124 KB Output is correct
31 Correct 16 ms 3136 KB Output is correct
32 Correct 16 ms 3132 KB Output is correct
33 Correct 163 ms 27476 KB Output is correct
34 Correct 162 ms 27472 KB Output is correct
35 Correct 217 ms 27584 KB Output is correct
36 Correct 265 ms 27476 KB Output is correct
37 Correct 284 ms 27476 KB Output is correct
38 Correct 329 ms 27476 KB Output is correct
39 Correct 462 ms 18248 KB Output is correct
40 Correct 457 ms 18260 KB Output is correct
41 Correct 483 ms 18256 KB Output is correct
42 Correct 156 ms 18056 KB Output is correct
43 Correct 161 ms 27476 KB Output is correct
44 Correct 168 ms 27472 KB Output is correct
45 Correct 156 ms 27480 KB Output is correct
46 Correct 159 ms 27476 KB Output is correct
47 Correct 162 ms 27472 KB Output is correct
48 Correct 159 ms 27476 KB Output is correct
49 Correct 157 ms 27608 KB Output is correct
50 Correct 170 ms 27612 KB Output is correct

Subtask #6
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 604 KB Output is correct
17 Correct 1 ms 604 KB Output is correct
18 Correct 1 ms 604 KB Output is correct
19 Correct 6 ms 1720 KB Output is correct
20 Correct 6 ms 1628 KB Output is correct
21 Correct 8 ms 1640 KB Output is correct
22 Correct 9 ms 1784 KB Output is correct
23 Correct 34 ms 1628 KB Output is correct
24 Correct 7 ms 1628 KB Output is correct
25 Correct 6 ms 1628 KB Output is correct
26 Correct 8 ms 1628 KB Output is correct
27 Correct 763 ms 82256 KB Output is correct
28 Correct 737 ms 82512 KB Output is correct
29 Correct 752 ms 81996 KB Output is correct
30 Correct 756 ms 82260 KB Output is correct
31 Correct 673 ms 72952 KB Output is correct
32 Correct 735 ms 82000 KB Output is correct
33 Correct 730 ms 80412 KB Output is correct
34 Correct 771 ms 81236 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 690 ms 27524 KB Output is correct
37 Correct 2646 ms 82260 KB Output is correct
38 Correct 2792 ms 82076 KB Output is correct
39 Execution timed out 3074 ms 78064 KB Time limit exceeded
40 Halted 0 ms 0 KB -