oj.uz

Submission #984765

# Submission time Handle Problem Language Result Execution time Memory
984765 2024-05-17T05:12:53 Z qwerasdfzxcl Circle selection (APIO18_circle_selection) C++17
87 / 100
 3000 ms 299816 KB 
#include <bits/stdc++.h>
 
using namespace std;
typedef long long ll;
 
constexpr int INF = 1e9 + 100, CHK = 2;
 
struct Circle{
	int x, y, r, i, xl, xr;
	Circle(){}
 
	bool operator < (const Circle &C) const{
		if (r==C.r) return i < C.i;
		return r > C.r;
	}
}C[300300];
int ans[300300];
 
int ok(int i, int j){
	ll d = (ll)(C[i].x-C[j].x) * (C[i].x-C[j].x) + (ll)(C[i].y-C[j].y) * (C[i].y-C[j].y);
	ll r = (ll)(C[i].r + C[j].r) * (C[i].r + C[j].r);
	return d <= r;
}
 
struct Seg{
 
	int sz;
	map<int, int> tree[1201200];
 
	map<int, int>::iterator iter0[30], iter[30];
	int T[30], buf[30], pt;
 
	void init(int n){
		sz = n;
		for (int i=0;i<sz*2;i++){
			tree[i][-INF] = 0;
			tree[i][INF] = 0;
		}
	}
 
	void update(int l, int r, int y, int i){
		r++;
		for (l+=sz, r+=sz;l<r;l>>=1, r>>=1){
			if (l&1){
				tree[l][y] = i;
				l++;
			}
			if (r&1){
				--r;
				tree[r][y] = i;
			}
		}
	}
 
	int queryU(int x, int y, int i){
		pt = 0;
		for (int node=x+sz;node>0;node>>=1){
			iter0[pt] = tree[node].lower_bound(y);
			iter[pt] = iter0[pt];
			buf[pt] = iter[pt]->first;
			pt++;
		}
 
		int ret = i;
 
		for (int _=0;_<CHK;_++){
			int idx = min_element(buf, buf+pt) - buf;
			if (buf[idx]==INF) break;
			if (ok(i, iter[idx]->second)) ret = min(ret, iter[idx]->second);
			
			iter[idx]++;
			buf[idx] = iter[idx]->first;
		}
 
		return ret;
 
	}
 
	int queryD(int i){
		for (int i=0;i<pt;i++){
			iter[i] = prev(iter0[i]);
			buf[i] = iter[i]->first;
		}
 
		int ret = i;
 
		for (int _=0;_<CHK;_++){
			int idx = max_element(buf, buf+pt) - buf;
			if (buf[idx]==-INF) break;

			if (ok(i, iter[idx]->second)) ret = min(ret, iter[idx]->second);

			iter[idx]--;			
			buf[idx] = iter[idx]->first;
		}
 
		return ret;
	}
}tree;
 
int calc(int x, int i){
	int ret = i;
	ret = min(ret, tree.queryU(x, C[i].y, i));
	ret = min(ret, tree.queryD(i));
 
	return ret;
}
 
int main(){
	int n;
	scanf("%d", &n);
 
	vector<int> X;
	for (int i=1;i<=n;i++){
		scanf("%d %d %d", &C[i].x, &C[i].y, &C[i].r);
		X.push_back(C[i].x - C[i].r);
		X.push_back(C[i].x + C[i].r);
 
		C[i].i = i;
	}
 
	sort(X.begin(), X.end());
	X.erase(unique(X.begin(), X.end()), X.end());
	for (int i=1;i<=n;i++){
		C[i].xl = lower_bound(X.begin(), X.end(), C[i].x - C[i].r) - X.begin();
		C[i].xr = lower_bound(X.begin(), X.end(), C[i].x + C[i].r) - X.begin();
	}
 
	sort(C+1, C+n+1);
	tree.init(X.size());
 
	for (int i=1;i<=n;i++){
		ans[C[i].i] = min(calc(C[i].xl, i), calc(C[i].xr, i));
		if (ans[C[i].i]==i) tree.update(C[i].xl, C[i].xr, C[i].y, i);
 
		ans[C[i].i] = C[ans[C[i].i]].i;
	}
 
	for (int i=1;i<=n;i++) printf("%d ", ans[i]);
	printf("\n");
}

Compilation message

circle_selection.cpp: In function 'int main()':
circle_selection.cpp:111:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  111 |  scanf("%d", &n);
      |  ~~~~~^~~~~~~~~~
circle_selection.cpp:115:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  115 |   scanf("%d %d %d", &C[i].x, &C[i].y, &C[i].r);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 57948 KB Output is correct
2 Correct 12 ms 58008 KB Output is correct
3 Correct 12 ms 58008 KB Output is correct
4 Correct 12 ms 57968 KB Output is correct
5 Correct 12 ms 57948 KB Output is correct
6 Correct 12 ms 58012 KB Output is correct
7 Correct 12 ms 57948 KB Output is correct
8 Correct 12 ms 58020 KB Output is correct
9 Correct 12 ms 57948 KB Output is correct
10 Correct 13 ms 57948 KB Output is correct
11 Correct 12 ms 57944 KB Output is correct
12 Correct 12 ms 57948 KB Output is correct
13 Correct 12 ms 57944 KB Output is correct
14 Correct 12 ms 57944 KB Output is correct
15 Correct 12 ms 57948 KB Output is correct
16 Correct 13 ms 58460 KB Output is correct
17 Correct 13 ms 58460 KB Output is correct
18 Correct 13 ms 58252 KB Output is correct
19 Correct 19 ms 62044 KB Output is correct
20 Correct 19 ms 62040 KB Output is correct
21 Correct 20 ms 62040 KB Output is correct
22 Correct 21 ms 62556 KB Output is correct
23 Correct 25 ms 63064 KB Output is correct
24 Correct 20 ms 62524 KB Output is correct
25 Correct 20 ms 62300 KB Output is correct
26 Correct 20 ms 62300 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 742 ms 182532 KB Output is correct
2 Correct 829 ms 182200 KB Output is correct
3 Correct 790 ms 182860 KB Output is correct
4 Correct 799 ms 183436 KB Output is correct
5 Correct 743 ms 125112 KB Output is correct
6 Correct 827 ms 191156 KB Output is correct
7 Correct 850 ms 171932 KB Output is correct
8 Correct 823 ms 179388 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 58080 KB Output is correct
2 Correct 486 ms 123484 KB Output is correct
3 Correct 1582 ms 249596 KB Output is correct
4 Correct 1596 ms 248716 KB Output is correct
5 Correct 1805 ms 243196 KB Output is correct
6 Correct 734 ms 145932 KB Output is correct
7 Correct 288 ms 101744 KB Output is correct
8 Correct 43 ms 67704 KB Output is correct
9 Correct 1693 ms 251980 KB Output is correct
10 Correct 2013 ms 240708 KB Output is correct

Subtask #4
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1315 ms 238976 KB Output is correct
2 Correct 740 ms 203296 KB Output is correct
3 Correct 1267 ms 190380 KB Output is correct
4 Correct 804 ms 208572 KB Output is correct
5 Correct 762 ms 205328 KB Output is correct
6 Correct 1115 ms 183952 KB Output is correct

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 57948 KB Output is correct
2 Correct 12 ms 58008 KB Output is correct
3 Correct 12 ms 58008 KB Output is correct
4 Correct 12 ms 57968 KB Output is correct
5 Correct 12 ms 57948 KB Output is correct
6 Correct 12 ms 58012 KB Output is correct
7 Correct 12 ms 57948 KB Output is correct
8 Correct 12 ms 58020 KB Output is correct
9 Correct 12 ms 57948 KB Output is correct
10 Correct 13 ms 57948 KB Output is correct
11 Correct 12 ms 57944 KB Output is correct
12 Correct 12 ms 57948 KB Output is correct
13 Correct 12 ms 57944 KB Output is correct
14 Correct 12 ms 57944 KB Output is correct
15 Correct 12 ms 57948 KB Output is correct
16 Correct 13 ms 58460 KB Output is correct
17 Correct 13 ms 58460 KB Output is correct
18 Correct 13 ms 58252 KB Output is correct
19 Correct 19 ms 62044 KB Output is correct
20 Correct 19 ms 62040 KB Output is correct
21 Correct 20 ms 62040 KB Output is correct
22 Correct 21 ms 62556 KB Output is correct
23 Correct 25 ms 63064 KB Output is correct
24 Correct 20 ms 62524 KB Output is correct
25 Correct 20 ms 62300 KB Output is correct
26 Correct 20 ms 62300 KB Output is correct
27 Correct 27 ms 63836 KB Output is correct
28 Correct 27 ms 63836 KB Output is correct
29 Correct 27 ms 63900 KB Output is correct
30 Correct 45 ms 65616 KB Output is correct
31 Correct 37 ms 64948 KB Output is correct
32 Correct 29 ms 64860 KB Output is correct
33 Correct 216 ms 101068 KB Output is correct
34 Correct 228 ms 101060 KB Output is correct
35 Correct 244 ms 101028 KB Output is correct
36 Correct 312 ms 113716 KB Output is correct
37 Correct 335 ms 114216 KB Output is correct
38 Correct 349 ms 116316 KB Output is correct
39 Correct 173 ms 66504 KB Output is correct
40 Correct 172 ms 66608 KB Output is correct
41 Correct 176 ms 66500 KB Output is correct
42 Correct 181 ms 67000 KB Output is correct
43 Correct 230 ms 107464 KB Output is correct
44 Correct 234 ms 107104 KB Output is correct
45 Correct 241 ms 107644 KB Output is correct
46 Correct 230 ms 107712 KB Output is correct
47 Correct 242 ms 106988 KB Output is correct
48 Correct 229 ms 107756 KB Output is correct
49 Correct 233 ms 106488 KB Output is correct
50 Correct 230 ms 107444 KB Output is correct

Subtask #6
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 57948 KB Output is correct
2 Correct 12 ms 58008 KB Output is correct
3 Correct 12 ms 58008 KB Output is correct
4 Correct 12 ms 57968 KB Output is correct
5 Correct 12 ms 57948 KB Output is correct
6 Correct 12 ms 58012 KB Output is correct
7 Correct 12 ms 57948 KB Output is correct
8 Correct 12 ms 58020 KB Output is correct
9 Correct 12 ms 57948 KB Output is correct
10 Correct 13 ms 57948 KB Output is correct
11 Correct 12 ms 57944 KB Output is correct
12 Correct 12 ms 57948 KB Output is correct
13 Correct 12 ms 57944 KB Output is correct
14 Correct 12 ms 57944 KB Output is correct
15 Correct 12 ms 57948 KB Output is correct
16 Correct 13 ms 58460 KB Output is correct
17 Correct 13 ms 58460 KB Output is correct
18 Correct 13 ms 58252 KB Output is correct
19 Correct 19 ms 62044 KB Output is correct
20 Correct 19 ms 62040 KB Output is correct
21 Correct 20 ms 62040 KB Output is correct
22 Correct 21 ms 62556 KB Output is correct
23 Correct 25 ms 63064 KB Output is correct
24 Correct 20 ms 62524 KB Output is correct
25 Correct 20 ms 62300 KB Output is correct
26 Correct 20 ms 62300 KB Output is correct
27 Correct 742 ms 182532 KB Output is correct
28 Correct 829 ms 182200 KB Output is correct
29 Correct 790 ms 182860 KB Output is correct
30 Correct 799 ms 183436 KB Output is correct
31 Correct 743 ms 125112 KB Output is correct
32 Correct 827 ms 191156 KB Output is correct
33 Correct 850 ms 171932 KB Output is correct
34 Correct 823 ms 179388 KB Output is correct
35 Correct 14 ms 58080 KB Output is correct
36 Correct 486 ms 123484 KB Output is correct
37 Correct 1582 ms 249596 KB Output is correct
38 Correct 1596 ms 248716 KB Output is correct
39 Correct 1805 ms 243196 KB Output is correct
40 Correct 734 ms 145932 KB Output is correct
41 Correct 288 ms 101744 KB Output is correct
42 Correct 43 ms 67704 KB Output is correct
43 Correct 1693 ms 251980 KB Output is correct
44 Correct 2013 ms 240708 KB Output is correct
45 Correct 1315 ms 238976 KB Output is correct
46 Correct 740 ms 203296 KB Output is correct
47 Correct 1267 ms 190380 KB Output is correct
48 Correct 804 ms 208572 KB Output is correct
49 Correct 762 ms 205328 KB Output is correct
50 Correct 1115 ms 183952 KB Output is correct
51 Correct 27 ms 63836 KB Output is correct
52 Correct 27 ms 63836 KB Output is correct
53 Correct 27 ms 63900 KB Output is correct
54 Correct 45 ms 65616 KB Output is correct
55 Correct 37 ms 64948 KB Output is correct
56 Correct 29 ms 64860 KB Output is correct
57 Correct 216 ms 101068 KB Output is correct
58 Correct 228 ms 101060 KB Output is correct
59 Correct 244 ms 101028 KB Output is correct
60 Correct 312 ms 113716 KB Output is correct
61 Correct 335 ms 114216 KB Output is correct
62 Correct 349 ms 116316 KB Output is correct
63 Correct 173 ms 66504 KB Output is correct
64 Correct 172 ms 66608 KB Output is correct
65 Correct 176 ms 66500 KB Output is correct
66 Correct 181 ms 67000 KB Output is correct
67 Correct 230 ms 107464 KB Output is correct
68 Correct 234 ms 107104 KB Output is correct
69 Correct 241 ms 107644 KB Output is correct
70 Correct 230 ms 107712 KB Output is correct
71 Correct 242 ms 106988 KB Output is correct
72 Correct 229 ms 107756 KB Output is correct
73 Correct 233 ms 106488 KB Output is correct
74 Correct 230 ms 107444 KB Output is correct
75 Correct 834 ms 181944 KB Output is correct
76 Correct 818 ms 183568 KB Output is correct
77 Correct 706 ms 182168 KB Output is correct
78 Correct 743 ms 183376 KB Output is correct
79 Correct 901 ms 183492 KB Output is correct
80 Correct 771 ms 182804 KB Output is correct
81 Correct 1516 ms 244532 KB Output is correct
82 Correct 1319 ms 233816 KB Output is correct
83 Correct 1355 ms 233876 KB Output is correct
84 Correct 1822 ms 259460 KB Output is correct
85 Correct 1443 ms 239996 KB Output is correct
86 Correct 1246 ms 232376 KB Output is correct
87 Execution timed out 3028 ms 299816 KB Time limit exceeded
88 Halted 0 ms 0 KB -