oj.uz

Submission #502033

# Submission time Handle Problem Language Result Execution time Memory
502033 2022-01-05T06:18:11 Z CodeTiger927 Circle selection (APIO18_circle_selection) C++14
7 / 100
 3000 ms 29584 KB 
using namespace std;

#include <iostream>
#include <vector>
#include <algorithm>

#define MAXN 300005

typedef long long ll;
typedef pair<ll,ll> pll;

int N,vis[MAXN],ans[MAXN];
// current unit circle length
long long gl = 1e18;
vector<pair<pair<ll,int>,pll>> pts;
vector<ll> xs;
vector<vector<pair<ll,int>>> g;

int get(long long x) {
	x /= gl;
	return lower_bound(xs.begin(),xs.end(),x) - xs.begin();
}

long long sq(long long x) {
	return x * x;
}

bool check(int a,int b) {
	return sq(pts[a].second.first - pts[b].second.first) + sq(pts[a].second.second - pts[b].second.second) <= sq(pts[a].first.first + pts[b].first.first);
}

void reconstruct(long long nl) {
	// cout << "BEGIN RECONSTRUCTION!" << endl;
	gl = nl;
	g.clear();
	xs.clear();
	for(auto [a,b] : pts) {
		xs.push_back(b.first / gl);
	}
	sort(xs.begin(),xs.end());
	xs.resize(unique(xs.begin(),xs.end()) - xs.begin());
	g = vector<vector<pair<ll,int>>>(xs.size(),vector<pair<ll,int>>());
	for(int i = 0;i < N;++i) {
		if(!vis[i]) g[get(pts[i].second.first)].push_back({pts[i].second.second,i});
	}
	for(int i = 0;i < xs.size();++i) {
		sort(g[i].begin(),g[i].end());
	}
	return;
}

int main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cin >> N;
	for(int i = 0;i < N;++i) {
		long long x,y,r;
		cin >> x >> y >> r;
		pts.push_back({{r,i},{x + 1e9,y + 1e9}});
	}
	sort(pts.begin(),pts.end(),[&](auto a,auto b) {return make_pair(-a.first.first,a.first.second) < make_pair(-b.first.first,b.first.second);});
	reconstruct(1e18);
	for(int i = 0;i < N;++i) {
		if(vis[i]) continue;
		// cout << "TERMINATOR " << i << " " << (pts[i].first.second + 1) << endl;
		if(pts[i].first.first * 2 <= gl) {
			// reconstruct(pts[i].first.first);
		}
		int x = get(pts[i].second.first);
		long long y = pts[i].second.second;
		long long r = pts[i].first.first;
		int index = pts[i].first.second;

		for(int j = max(0,x - 2);j <= min(x + 2,(int)xs.size() - 1);++j) {
			// auto itr = lower_bound(g[j].begin(),g[j].end(),make_pair(y - r,-1));
			for(auto itr = g[j].begin();itr != g[j].end();++itr) {
				if(check(i,itr -> second)) {
					// cout << (itr -> second) << endl;
					if(!vis[itr -> second]) vis[itr -> second] = index + 1;
				}
			}
		}
	}
	for(int i = 0;i < N;++i) {
		ans[pts[i].first.second] = vis[i];
	}
	for(int i = 0;i < N;++i) {
		cout << ans[i] << " \n"[i == N - 1];
	}
	return 0;
}

Compilation message

circle_selection.cpp: In function 'void reconstruct(long long int)':
circle_selection.cpp:37:11: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   37 |  for(auto [a,b] : pts) {
      |           ^
circle_selection.cpp:46:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   46 |  for(int i = 0;i < xs.size();++i) {
      |                ~~^~~~~~~~~~~
circle_selection.cpp: In function 'int main()':
circle_selection.cpp:70:13: warning: unused variable 'y' [-Wunused-variable]
   70 |   long long y = pts[i].second.second;
      |             ^
circle_selection.cpp:71:13: warning: unused variable 'r' [-Wunused-variable]
   71 |   long long r = pts[i].first.first;
      |             ^

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 316 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 1 ms 320 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 0 ms 332 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 0 ms 320 KB Output is correct
10 Correct 1 ms 320 KB Output is correct
11 Correct 0 ms 308 KB Output is correct
12 Correct 0 ms 316 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 0 ms 296 KB Output is correct
15 Correct 0 ms 332 KB Output is correct
16 Correct 1 ms 336 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 324 KB Output is correct
19 Correct 3 ms 968 KB Output is correct
20 Correct 3 ms 968 KB Output is correct
21 Correct 4 ms 992 KB Output is correct
22 Correct 83 ms 912 KB Output is correct
23 Correct 83 ms 968 KB Output is correct
24 Correct 83 ms 912 KB Output is correct
25 Correct 83 ms 844 KB Output is correct
26 Correct 83 ms 972 KB Output is correct

Subtask #2
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 162 ms 29456 KB Output is correct
2 Correct 178 ms 29500 KB Output is correct
3 Correct 170 ms 29308 KB Output is correct
4 Correct 158 ms 29584 KB Output is correct
5 Execution timed out 3065 ms 26220 KB Time limit exceeded
6 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Execution timed out 3062 ms 8240 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 3053 ms 25140 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 316 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 1 ms 320 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 0 ms 332 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 0 ms 320 KB Output is correct
10 Correct 1 ms 320 KB Output is correct
11 Correct 0 ms 308 KB Output is correct
12 Correct 0 ms 316 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 0 ms 296 KB Output is correct
15 Correct 0 ms 332 KB Output is correct
16 Correct 1 ms 336 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 324 KB Output is correct
19 Correct 3 ms 968 KB Output is correct
20 Correct 3 ms 968 KB Output is correct
21 Correct 4 ms 992 KB Output is correct
22 Correct 83 ms 912 KB Output is correct
23 Correct 83 ms 968 KB Output is correct
24 Correct 83 ms 912 KB Output is correct
25 Correct 83 ms 844 KB Output is correct
26 Correct 83 ms 972 KB Output is correct
27 Correct 7 ms 1476 KB Output is correct
28 Correct 6 ms 1476 KB Output is correct
29 Correct 6 ms 1456 KB Output is correct
30 Correct 360 ms 1436 KB Output is correct
31 Correct 345 ms 1476 KB Output is correct
32 Correct 396 ms 1476 KB Output is correct
33 Correct 63 ms 12288 KB Output is correct
34 Correct 62 ms 12304 KB Output is correct
35 Correct 127 ms 12164 KB Output is correct
36 Execution timed out 3089 ms 10436 KB Time limit exceeded
37 Halted 0 ms 0 KB -

Subtask #6
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 316 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 1 ms 320 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 332 KB Output is correct
7 Correct 0 ms 332 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 0 ms 320 KB Output is correct
10 Correct 1 ms 320 KB Output is correct
11 Correct 0 ms 308 KB Output is correct
12 Correct 0 ms 316 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 0 ms 296 KB Output is correct
15 Correct 0 ms 332 KB Output is correct
16 Correct 1 ms 336 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 324 KB Output is correct
19 Correct 3 ms 968 KB Output is correct
20 Correct 3 ms 968 KB Output is correct
21 Correct 4 ms 992 KB Output is correct
22 Correct 83 ms 912 KB Output is correct
23 Correct 83 ms 968 KB Output is correct
24 Correct 83 ms 912 KB Output is correct
25 Correct 83 ms 844 KB Output is correct
26 Correct 83 ms 972 KB Output is correct
27 Correct 162 ms 29456 KB Output is correct
28 Correct 178 ms 29500 KB Output is correct
29 Correct 170 ms 29308 KB Output is correct
30 Correct 158 ms 29584 KB Output is correct
31 Execution timed out 3065 ms 26220 KB Time limit exceeded
32 Halted 0 ms 0 KB -