oj.uz

Submission #209224

# Submission time Handle Problem Language Result Execution time Memory
209224 2020-03-13T12:48:23 Z jtnydv25 Circle selection (APIO18_circle_selection) C++14
100 / 100
 1345 ms 66212 KB 
#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define sd(x) scanf("%d", &(x))
#define pii pair<int, int>
#define F first
#define S second
#define all(c) ((c).begin()), ((c).end())
#define sz(x) ((int)(x).size())
#define ld long double

template<class T,class U>
ostream& operator<<(ostream& os,const pair<T,U>& p){
	os<<"("<<p.first<<", "<<p.second<<")";
	return os;
}

template<class T>
ostream& operator <<(ostream& os,const vector<T>& v){
	os<<"{";
	for(int i = 0;i < (int)v.size(); i++){
		if(i)os<<", ";
		os<<v[i];
	}
	os<<"}";
	return os;
}

#ifdef LOCAL
#define cerr cout
#else
#endif

#define TRACE

#ifdef TRACE
#define trace(...) __f(#__VA_ARGS__, __VA_ARGS__)
template <typename Arg1>
void __f(const char* name, Arg1&& arg1){
	cerr << name << " : " << arg1 << std::endl;
}
template <typename Arg1, typename... Args>
void __f(const char* names, Arg1&& arg1, Args&&... args){
	const char* comma = strchr(names + 1, ',');cerr.write(names, comma - names) << " : " << arg1<<" | ";__f(comma+1, args...);
}
#else
#define trace(...)
#endif

const int N = 300005;
int x[N], y[N], r[N];

int where[N]; // compression

vector<pii> points[N];

inline ll sq(int x){return x * (ll) x;}
inline bool intersecting(int i, int j){
	return sq(x[i] - x[j]) + sq(y[i] - y[j]) <= sq(r[i] + r[j]);
}

int daddy[N];

int main(){
	memset(daddy, -1, sizeof daddy);
	int n; sd(n);
	for(int i = 0; i < n; i++){
		sd(x[i]); sd(y[i]); sd(r[i]);
	}
	vector<int> perm(n), xsorted(n), ysorted(n);
	iota(all(perm), 0);
	iota(all(xsorted), 0);
	iota(all(ysorted), 0);
	stable_sort(all(perm), [](int i, int j){return r[i] > r[j];});
	stable_sort(all(xsorted), [](int i, int j){return x[i] < x[j];});
	stable_sort(all(ysorted), [](int i, int j){return y[i] < y[j];});

	vector<int> compressedX;
	function<void(int)> compress = [&](int R){
		for(int j = 0; j < sz(compressedX); j++) points[j].clear();
		compressedX.clear();
		int curr = x[xsorted[0]] / R;
		compressedX.push_back(curr);
		for(int i = 0; i < n; i++){
			int pos = xsorted[i];
			if(x[pos] / R == curr){
				where[pos] = sz(compressedX) - 1;
			} else{
				compressedX.push_back(curr = x[pos] / R);
				where[pos] = sz(compressedX) - 1;
			}
		}

		for(int pos : ysorted){
			points[where[pos]].push_back({y[pos], pos});
		}
	};

	int R = 2000000001;
	for(int pos : perm){
		if(daddy[pos] != -1) continue;
		if(2 * r[pos] < R){
			R = r[pos];
			compress(R);
		}
		daddy[pos] = pos;
		int p = lower_bound(all(compressedX), x[pos] / R - 2) - compressedX.begin();
		int mx = x[pos] / R + 2;
		for(;p < sz(compressedX) && compressedX[p] <= mx; p++) if(!points[p].empty()){
			int mn = y[pos] + 1e9 < 2 * R ? -1e9 - 10 : y[pos] - 2 * R;
			int mx = y[pos] - 1e9 > -2 * R ? 1e9 + 10 : y[pos] + 2 * R;
			int q = lower_bound(all(points[p]), make_pair(mn, -1)) - points[p].begin();
			while(q < sz(points[p]) && points[p][q].first <= mx){
				int t = points[p][q].S;
				if(daddy[t] == -1 && intersecting(pos, t)){
					daddy[t] = pos;
				}
				q++;
			}
		}
	}

	for(int i = 0; i < n; i++) printf("%d ", daddy[i] + 1);
	printf("\n");
}

Compilation message

circle_selection.cpp: In function 'int main()':
circle_selection.cpp:5:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
 #define sd(x) scanf("%d", &(x))
               ~~~~~^~~~~~~~~~~~
circle_selection.cpp:67:9: note: in expansion of macro 'sd'
  int n; sd(n);
         ^~
circle_selection.cpp:5:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
 #define sd(x) scanf("%d", &(x))
               ~~~~~^~~~~~~~~~~~
circle_selection.cpp:69:3: note: in expansion of macro 'sd'
   sd(x[i]); sd(y[i]); sd(r[i]);
   ^~
circle_selection.cpp:5:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
 #define sd(x) scanf("%d", &(x))
               ~~~~~^~~~~~~~~~~~
circle_selection.cpp:69:13: note: in expansion of macro 'sd'
   sd(x[i]); sd(y[i]); sd(r[i]);
             ^~
circle_selection.cpp:5:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
 #define sd(x) scanf("%d", &(x))
               ~~~~~^~~~~~~~~~~~
circle_selection.cpp:69:23: note: in expansion of macro 'sd'
   sd(x[i]); sd(y[i]); sd(r[i]);
                       ^~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 8572 KB Output is correct
2 Correct 10 ms 8568 KB Output is correct
3 Correct 9 ms 8568 KB Output is correct
4 Correct 10 ms 8568 KB Output is correct
5 Correct 9 ms 8568 KB Output is correct
6 Correct 10 ms 8568 KB Output is correct
7 Correct 10 ms 8444 KB Output is correct
8 Correct 10 ms 8568 KB Output is correct
9 Correct 10 ms 8568 KB Output is correct
10 Correct 10 ms 8568 KB Output is correct
11 Correct 10 ms 8568 KB Output is correct
12 Correct 10 ms 8568 KB Output is correct
13 Correct 10 ms 8568 KB Output is correct
14 Correct 10 ms 8568 KB Output is correct
15 Correct 11 ms 8568 KB Output is correct
16 Correct 11 ms 8696 KB Output is correct
17 Correct 12 ms 8568 KB Output is correct
18 Correct 11 ms 8568 KB Output is correct
19 Correct 15 ms 8952 KB Output is correct
20 Correct 15 ms 8952 KB Output is correct
21 Correct 15 ms 9080 KB Output is correct
22 Correct 18 ms 9208 KB Output is correct
23 Correct 18 ms 9208 KB Output is correct
24 Correct 17 ms 9080 KB Output is correct
25 Correct 17 ms 9080 KB Output is correct
26 Correct 17 ms 9080 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 301 ms 24872 KB Output is correct
2 Correct 297 ms 24364 KB Output is correct
3 Correct 286 ms 22828 KB Output is correct
4 Correct 292 ms 24232 KB Output is correct
5 Correct 380 ms 31920 KB Output is correct
6 Correct 565 ms 30376 KB Output is correct
7 Correct 501 ms 35244 KB Output is correct
8 Correct 522 ms 32940 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 8568 KB Output is correct
2 Correct 302 ms 17588 KB Output is correct
3 Correct 1338 ms 35552 KB Output is correct
4 Correct 1345 ms 35368 KB Output is correct
5 Correct 1234 ms 38948 KB Output is correct
6 Correct 327 ms 22464 KB Output is correct
7 Correct 199 ms 15580 KB Output is correct
8 Correct 34 ms 9720 KB Output is correct
9 Correct 1154 ms 38664 KB Output is correct
10 Correct 633 ms 34328 KB Output is correct

Subtask #4
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 522 ms 23820 KB Output is correct
2 Correct 454 ms 29352 KB Output is correct
3 Correct 340 ms 21672 KB Output is correct
4 Correct 481 ms 28588 KB Output is correct
5 Correct 462 ms 28972 KB Output is correct
6 Correct 330 ms 20908 KB Output is correct

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 8572 KB Output is correct
2 Correct 10 ms 8568 KB Output is correct
3 Correct 9 ms 8568 KB Output is correct
4 Correct 10 ms 8568 KB Output is correct
5 Correct 9 ms 8568 KB Output is correct
6 Correct 10 ms 8568 KB Output is correct
7 Correct 10 ms 8444 KB Output is correct
8 Correct 10 ms 8568 KB Output is correct
9 Correct 10 ms 8568 KB Output is correct
10 Correct 10 ms 8568 KB Output is correct
11 Correct 10 ms 8568 KB Output is correct
12 Correct 10 ms 8568 KB Output is correct
13 Correct 10 ms 8568 KB Output is correct
14 Correct 10 ms 8568 KB Output is correct
15 Correct 11 ms 8568 KB Output is correct
16 Correct 11 ms 8696 KB Output is correct
17 Correct 12 ms 8568 KB Output is correct
18 Correct 11 ms 8568 KB Output is correct
19 Correct 15 ms 8952 KB Output is correct
20 Correct 15 ms 8952 KB Output is correct
21 Correct 15 ms 9080 KB Output is correct
22 Correct 18 ms 9208 KB Output is correct
23 Correct 18 ms 9208 KB Output is correct
24 Correct 17 ms 9080 KB Output is correct
25 Correct 17 ms 9080 KB Output is correct
26 Correct 17 ms 9080 KB Output is correct
27 Correct 22 ms 9720 KB Output is correct
28 Correct 21 ms 9336 KB Output is correct
29 Correct 21 ms 9336 KB Output is correct
30 Correct 28 ms 9592 KB Output is correct
31 Correct 28 ms 9592 KB Output is correct
32 Correct 27 ms 9568 KB Output is correct
33 Correct 122 ms 16304 KB Output is correct
34 Correct 128 ms 16464 KB Output is correct
35 Correct 181 ms 24120 KB Output is correct
36 Correct 256 ms 18484 KB Output is correct
37 Correct 259 ms 18744 KB Output is correct
38 Correct 267 ms 19124 KB Output is correct
39 Correct 215 ms 27500 KB Output is correct
40 Correct 218 ms 27888 KB Output is correct
41 Correct 206 ms 26740 KB Output is correct
42 Correct 100 ms 14900 KB Output is correct
43 Correct 138 ms 17944 KB Output is correct
44 Correct 132 ms 17972 KB Output is correct
45 Correct 130 ms 17972 KB Output is correct
46 Correct 131 ms 17876 KB Output is correct
47 Correct 128 ms 17972 KB Output is correct
48 Correct 133 ms 17972 KB Output is correct
49 Correct 129 ms 18016 KB Output is correct
50 Correct 140 ms 17972 KB Output is correct

Subtask #6
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 8572 KB Output is correct
2 Correct 10 ms 8568 KB Output is correct
3 Correct 9 ms 8568 KB Output is correct
4 Correct 10 ms 8568 KB Output is correct
5 Correct 9 ms 8568 KB Output is correct
6 Correct 10 ms 8568 KB Output is correct
7 Correct 10 ms 8444 KB Output is correct
8 Correct 10 ms 8568 KB Output is correct
9 Correct 10 ms 8568 KB Output is correct
10 Correct 10 ms 8568 KB Output is correct
11 Correct 10 ms 8568 KB Output is correct
12 Correct 10 ms 8568 KB Output is correct
13 Correct 10 ms 8568 KB Output is correct
14 Correct 10 ms 8568 KB Output is correct
15 Correct 11 ms 8568 KB Output is correct
16 Correct 11 ms 8696 KB Output is correct
17 Correct 12 ms 8568 KB Output is correct
18 Correct 11 ms 8568 KB Output is correct
19 Correct 15 ms 8952 KB Output is correct
20 Correct 15 ms 8952 KB Output is correct
21 Correct 15 ms 9080 KB Output is correct
22 Correct 18 ms 9208 KB Output is correct
23 Correct 18 ms 9208 KB Output is correct
24 Correct 17 ms 9080 KB Output is correct
25 Correct 17 ms 9080 KB Output is correct
26 Correct 17 ms 9080 KB Output is correct
27 Correct 301 ms 24872 KB Output is correct
28 Correct 297 ms 24364 KB Output is correct
29 Correct 286 ms 22828 KB Output is correct
30 Correct 292 ms 24232 KB Output is correct
31 Correct 380 ms 31920 KB Output is correct
32 Correct 565 ms 30376 KB Output is correct
33 Correct 501 ms 35244 KB Output is correct
34 Correct 522 ms 32940 KB Output is correct
35 Correct 9 ms 8568 KB Output is correct
36 Correct 302 ms 17588 KB Output is correct
37 Correct 1338 ms 35552 KB Output is correct
38 Correct 1345 ms 35368 KB Output is correct
39 Correct 1234 ms 38948 KB Output is correct
40 Correct 327 ms 22464 KB Output is correct
41 Correct 199 ms 15580 KB Output is correct
42 Correct 34 ms 9720 KB Output is correct
43 Correct 1154 ms 38664 KB Output is correct
44 Correct 633 ms 34328 KB Output is correct
45 Correct 522 ms 23820 KB Output is correct
46 Correct 454 ms 29352 KB Output is correct
47 Correct 340 ms 21672 KB Output is correct
48 Correct 481 ms 28588 KB Output is correct
49 Correct 462 ms 28972 KB Output is correct
50 Correct 330 ms 20908 KB Output is correct
51 Correct 22 ms 9720 KB Output is correct
52 Correct 21 ms 9336 KB Output is correct
53 Correct 21 ms 9336 KB Output is correct
54 Correct 28 ms 9592 KB Output is correct
55 Correct 28 ms 9592 KB Output is correct
56 Correct 27 ms 9568 KB Output is correct
57 Correct 122 ms 16304 KB Output is correct
58 Correct 128 ms 16464 KB Output is correct
59 Correct 181 ms 24120 KB Output is correct
60 Correct 256 ms 18484 KB Output is correct
61 Correct 259 ms 18744 KB Output is correct
62 Correct 267 ms 19124 KB Output is correct
63 Correct 215 ms 27500 KB Output is correct
64 Correct 218 ms 27888 KB Output is correct
65 Correct 206 ms 26740 KB Output is correct
66 Correct 100 ms 14900 KB Output is correct
67 Correct 138 ms 17944 KB Output is correct
68 Correct 132 ms 17972 KB Output is correct
69 Correct 130 ms 17972 KB Output is correct
70 Correct 131 ms 17876 KB Output is correct
71 Correct 128 ms 17972 KB Output is correct
72 Correct 133 ms 17972 KB Output is correct
73 Correct 129 ms 18016 KB Output is correct
74 Correct 140 ms 17972 KB Output is correct
75 Correct 542 ms 51276 KB Output is correct
76 Correct 385 ms 34220 KB Output is correct
77 Correct 355 ms 32168 KB Output is correct
78 Correct 373 ms 32040 KB Output is correct
79 Correct 675 ms 52264 KB Output is correct
80 Correct 375 ms 32204 KB Output is correct
81 Correct 1266 ms 42664 KB Output is correct
82 Correct 1246 ms 41424 KB Output is correct
83 Correct 1269 ms 41340 KB Output is correct
84 Correct 1213 ms 45012 KB Output is correct
85 Correct 1248 ms 42288 KB Output is correct
86 Correct 1295 ms 41128 KB Output is correct
87 Correct 1117 ms 51928 KB Output is correct
88 Correct 749 ms 61260 KB Output is correct
89 Correct 733 ms 63764 KB Output is correct
90 Correct 749 ms 63660 KB Output is correct
91 Correct 743 ms 63784 KB Output is correct
92 Correct 745 ms 66212 KB Output is correct
93 Correct 611 ms 36392 KB Output is correct
94 Correct 460 ms 34852 KB Output is correct
95 Correct 611 ms 36444 KB Output is correct
96 Correct 681 ms 36520 KB Output is correct
97 Correct 523 ms 32680 KB Output is correct
98 Correct 706 ms 37928 KB Output is correct
99 Correct 660 ms 36396 KB Output is correct
100 Correct 489 ms 36136 KB Output is correct
101 Correct 751 ms 39804 KB Output is correct
102 Correct 661 ms 36452 KB Output is correct
103 Correct 565 ms 38184 KB Output is correct
104 Correct 674 ms 36144 KB Output is correct
105 Correct 320 ms 28484 KB Output is correct
106 Correct 428 ms 34984 KB Output is correct
107 Correct 422 ms 34860 KB Output is correct
108 Correct 425 ms 34988 KB Output is correct
109 Correct 425 ms 34860 KB Output is correct
110 Correct 432 ms 34984 KB Output is correct
111 Correct 428 ms 34984 KB Output is correct
112 Correct 424 ms 34860 KB Output is correct
113 Correct 428 ms 34856 KB Output is correct
114 Correct 419 ms 34856 KB Output is correct
115 Correct 424 ms 34856 KB Output is correct
116 Correct 420 ms 36392 KB Output is correct