답안 #49668

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
49668 2018-06-01T19:22:53 Z gs14004 원 고르기 (APIO18_circle_selection) C++17
100 / 100
1852 ms 24476 KB
#include <bits/stdc++.h>
using namespace std;
const int MAXN = 300005;
const int offs = 1e9 + 100;
using pi = pair<int, int>;

struct circ{
	int x, y, r, idx;
	bool operator<(const circ &c)const{
		return pi(x, y) < pi(c.x, c.y);
	}
}a[MAXN], orig_pos[MAXN];

int n, ans[MAXN];

int main(){
	scanf("%d",&n);
	for(int i=0; i<n; i++){
		scanf("%d %d %d",&a[i].x,&a[i].y,&a[i].r);
		a[i].x += offs;
		a[i].y += offs;
		a[i].idx = i + 1;
		orig_pos[i + 1] = a[i];
	}
	auto inter = [&](circ a, circ b){
		int dx = a.x - b.x;
		int dy = a.y - b.y;
		int dr = a.r + b.r;
		return 1ll * dx * dx + 1ll * dy * dy <= 1ll * dr * dr;
	};
	sort(a, a+n, [&](const circ &a, const circ &b){
		return pi(-a.r, a.idx) < pi(-b.r, b.idx);
	});
	for(int i=30; i; i--){
		int lb = (1 << (i - 1)), rb = (1 << i) - 1;
		vector<circ> v;
		for(int j=0; j<n; j++){
			if(!ans[a[j].idx] && a[j].r <= rb){
				v.push_back((circ){a[j].x >> i, a[j].y >> i, a[j].r, a[j].idx});
			}
		}
		sort(v.begin(), v.end());
		for(int j=0; j<n; j++){
			if(!ans[a[j].idx] && a[j].r <= rb && a[j].r >= lb){
				for(int k=-2; k<=2; k++){
					int px = (a[j].x >> i) + k;
					int py = (a[j].y >> i) - 2;
					auto itr = lower_bound(v.begin(), v.end(), (circ){px, py, -1, -1}) - v.begin();
					while(itr < v.size() && pi(v[itr].x, v[itr].y) <= pi(px, py + 4)){
						if(inter(orig_pos[v[itr].idx], a[j])){
							if(!ans[v[itr].idx]) ans[v[itr].idx] = a[j].idx;
						}
						itr++;
					}
				}
			}
		}
	}
	for(int i=1; i<=n; i++) printf("%d ", ans[i]);
}

Compilation message

circle_selection.cpp: In function 'int main()':
circle_selection.cpp:49:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
      while(itr < v.size() && pi(v[itr].x, v[itr].y) <= pi(px, py + 4)){
            ~~~~^~~~~~~~~~
circle_selection.cpp:17:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&n);
  ~~~~~^~~~~~~~~
circle_selection.cpp:19:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d %d",&a[i].x,&a[i].y,&a[i].r);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 428 KB Output is correct
4 Correct 2 ms 480 KB Output is correct
5 Correct 2 ms 480 KB Output is correct
6 Correct 2 ms 480 KB Output is correct
7 Correct 2 ms 512 KB Output is correct
8 Correct 2 ms 512 KB Output is correct
9 Correct 2 ms 736 KB Output is correct
10 Correct 2 ms 736 KB Output is correct
11 Correct 2 ms 736 KB Output is correct
12 Correct 2 ms 736 KB Output is correct
13 Correct 2 ms 736 KB Output is correct
14 Correct 3 ms 744 KB Output is correct
15 Correct 3 ms 744 KB Output is correct
16 Correct 3 ms 744 KB Output is correct
17 Correct 4 ms 744 KB Output is correct
18 Correct 3 ms 744 KB Output is correct
19 Correct 7 ms 1020 KB Output is correct
20 Correct 6 ms 1020 KB Output is correct
21 Correct 6 ms 1036 KB Output is correct
22 Correct 18 ms 1036 KB Output is correct
23 Correct 17 ms 1040 KB Output is correct
24 Correct 18 ms 1040 KB Output is correct
25 Correct 19 ms 1132 KB Output is correct
26 Correct 17 ms 1132 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 291 ms 24112 KB Output is correct
2 Correct 341 ms 24268 KB Output is correct
3 Correct 340 ms 24268 KB Output is correct
4 Correct 310 ms 24268 KB Output is correct
5 Correct 908 ms 24272 KB Output is correct
6 Correct 1101 ms 24272 KB Output is correct
7 Correct 1008 ms 24272 KB Output is correct
8 Correct 984 ms 24272 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 24272 KB Output is correct
2 Correct 366 ms 24272 KB Output is correct
3 Correct 1241 ms 24344 KB Output is correct
4 Correct 1198 ms 24344 KB Output is correct
5 Correct 1080 ms 24344 KB Output is correct
6 Correct 551 ms 24344 KB Output is correct
7 Correct 243 ms 24344 KB Output is correct
8 Correct 53 ms 24344 KB Output is correct
9 Correct 1166 ms 24344 KB Output is correct
10 Correct 943 ms 24344 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 1357 ms 24344 KB Output is correct
2 Correct 1852 ms 24344 KB Output is correct
3 Correct 607 ms 24344 KB Output is correct
4 Correct 1340 ms 24356 KB Output is correct
5 Correct 1350 ms 24356 KB Output is correct
6 Correct 501 ms 24356 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 428 KB Output is correct
4 Correct 2 ms 480 KB Output is correct
5 Correct 2 ms 480 KB Output is correct
6 Correct 2 ms 480 KB Output is correct
7 Correct 2 ms 512 KB Output is correct
8 Correct 2 ms 512 KB Output is correct
9 Correct 2 ms 736 KB Output is correct
10 Correct 2 ms 736 KB Output is correct
11 Correct 2 ms 736 KB Output is correct
12 Correct 2 ms 736 KB Output is correct
13 Correct 2 ms 736 KB Output is correct
14 Correct 3 ms 744 KB Output is correct
15 Correct 3 ms 744 KB Output is correct
16 Correct 3 ms 744 KB Output is correct
17 Correct 4 ms 744 KB Output is correct
18 Correct 3 ms 744 KB Output is correct
19 Correct 7 ms 1020 KB Output is correct
20 Correct 6 ms 1020 KB Output is correct
21 Correct 6 ms 1036 KB Output is correct
22 Correct 18 ms 1036 KB Output is correct
23 Correct 17 ms 1040 KB Output is correct
24 Correct 18 ms 1040 KB Output is correct
25 Correct 19 ms 1132 KB Output is correct
26 Correct 17 ms 1132 KB Output is correct
27 Correct 13 ms 24356 KB Output is correct
28 Correct 13 ms 24356 KB Output is correct
29 Correct 12 ms 24356 KB Output is correct
30 Correct 38 ms 24356 KB Output is correct
31 Correct 36 ms 24356 KB Output is correct
32 Correct 35 ms 24356 KB Output is correct
33 Correct 107 ms 24356 KB Output is correct
34 Correct 115 ms 24356 KB Output is correct
35 Correct 155 ms 24356 KB Output is correct
36 Correct 425 ms 24356 KB Output is correct
37 Correct 396 ms 24356 KB Output is correct
38 Correct 390 ms 24356 KB Output is correct
39 Correct 428 ms 24356 KB Output is correct
40 Correct 476 ms 24356 KB Output is correct
41 Correct 380 ms 24356 KB Output is correct
42 Correct 289 ms 24356 KB Output is correct
43 Correct 377 ms 24356 KB Output is correct
44 Correct 392 ms 24356 KB Output is correct
45 Correct 365 ms 24356 KB Output is correct
46 Correct 361 ms 24356 KB Output is correct
47 Correct 355 ms 24356 KB Output is correct
48 Correct 367 ms 24356 KB Output is correct
49 Correct 359 ms 24356 KB Output is correct
50 Correct 359 ms 24356 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 428 KB Output is correct
4 Correct 2 ms 480 KB Output is correct
5 Correct 2 ms 480 KB Output is correct
6 Correct 2 ms 480 KB Output is correct
7 Correct 2 ms 512 KB Output is correct
8 Correct 2 ms 512 KB Output is correct
9 Correct 2 ms 736 KB Output is correct
10 Correct 2 ms 736 KB Output is correct
11 Correct 2 ms 736 KB Output is correct
12 Correct 2 ms 736 KB Output is correct
13 Correct 2 ms 736 KB Output is correct
14 Correct 3 ms 744 KB Output is correct
15 Correct 3 ms 744 KB Output is correct
16 Correct 3 ms 744 KB Output is correct
17 Correct 4 ms 744 KB Output is correct
18 Correct 3 ms 744 KB Output is correct
19 Correct 7 ms 1020 KB Output is correct
20 Correct 6 ms 1020 KB Output is correct
21 Correct 6 ms 1036 KB Output is correct
22 Correct 18 ms 1036 KB Output is correct
23 Correct 17 ms 1040 KB Output is correct
24 Correct 18 ms 1040 KB Output is correct
25 Correct 19 ms 1132 KB Output is correct
26 Correct 17 ms 1132 KB Output is correct
27 Correct 291 ms 24112 KB Output is correct
28 Correct 341 ms 24268 KB Output is correct
29 Correct 340 ms 24268 KB Output is correct
30 Correct 310 ms 24268 KB Output is correct
31 Correct 908 ms 24272 KB Output is correct
32 Correct 1101 ms 24272 KB Output is correct
33 Correct 1008 ms 24272 KB Output is correct
34 Correct 984 ms 24272 KB Output is correct
35 Correct 2 ms 24272 KB Output is correct
36 Correct 366 ms 24272 KB Output is correct
37 Correct 1241 ms 24344 KB Output is correct
38 Correct 1198 ms 24344 KB Output is correct
39 Correct 1080 ms 24344 KB Output is correct
40 Correct 551 ms 24344 KB Output is correct
41 Correct 243 ms 24344 KB Output is correct
42 Correct 53 ms 24344 KB Output is correct
43 Correct 1166 ms 24344 KB Output is correct
44 Correct 943 ms 24344 KB Output is correct
45 Correct 1357 ms 24344 KB Output is correct
46 Correct 1852 ms 24344 KB Output is correct
47 Correct 607 ms 24344 KB Output is correct
48 Correct 1340 ms 24356 KB Output is correct
49 Correct 1350 ms 24356 KB Output is correct
50 Correct 501 ms 24356 KB Output is correct
51 Correct 13 ms 24356 KB Output is correct
52 Correct 13 ms 24356 KB Output is correct
53 Correct 12 ms 24356 KB Output is correct
54 Correct 38 ms 24356 KB Output is correct
55 Correct 36 ms 24356 KB Output is correct
56 Correct 35 ms 24356 KB Output is correct
57 Correct 107 ms 24356 KB Output is correct
58 Correct 115 ms 24356 KB Output is correct
59 Correct 155 ms 24356 KB Output is correct
60 Correct 425 ms 24356 KB Output is correct
61 Correct 396 ms 24356 KB Output is correct
62 Correct 390 ms 24356 KB Output is correct
63 Correct 428 ms 24356 KB Output is correct
64 Correct 476 ms 24356 KB Output is correct
65 Correct 380 ms 24356 KB Output is correct
66 Correct 289 ms 24356 KB Output is correct
67 Correct 377 ms 24356 KB Output is correct
68 Correct 392 ms 24356 KB Output is correct
69 Correct 365 ms 24356 KB Output is correct
70 Correct 361 ms 24356 KB Output is correct
71 Correct 355 ms 24356 KB Output is correct
72 Correct 367 ms 24356 KB Output is correct
73 Correct 359 ms 24356 KB Output is correct
74 Correct 359 ms 24356 KB Output is correct
75 Correct 361 ms 24356 KB Output is correct
76 Correct 437 ms 24356 KB Output is correct
77 Correct 407 ms 24356 KB Output is correct
78 Correct 351 ms 24356 KB Output is correct
79 Correct 542 ms 24356 KB Output is correct
80 Correct 324 ms 24356 KB Output is correct
81 Correct 1353 ms 24356 KB Output is correct
82 Correct 1321 ms 24356 KB Output is correct
83 Correct 1295 ms 24356 KB Output is correct
84 Correct 1287 ms 24356 KB Output is correct
85 Correct 1296 ms 24424 KB Output is correct
86 Correct 1368 ms 24424 KB Output is correct
87 Correct 1299 ms 24424 KB Output is correct
88 Correct 1335 ms 24424 KB Output is correct
89 Correct 1312 ms 24476 KB Output is correct
90 Correct 1218 ms 24476 KB Output is correct
91 Correct 1345 ms 24476 KB Output is correct
92 Correct 1366 ms 24476 KB Output is correct
93 Correct 1437 ms 24476 KB Output is correct
94 Correct 1393 ms 24476 KB Output is correct
95 Correct 1373 ms 24476 KB Output is correct
96 Correct 1311 ms 24476 KB Output is correct
97 Correct 1561 ms 24476 KB Output is correct
98 Correct 1115 ms 24476 KB Output is correct
99 Correct 1429 ms 24476 KB Output is correct
100 Correct 1498 ms 24476 KB Output is correct
101 Correct 1127 ms 24476 KB Output is correct
102 Correct 1356 ms 24476 KB Output is correct
103 Correct 1581 ms 24476 KB Output is correct
104 Correct 1590 ms 24476 KB Output is correct
105 Correct 961 ms 24476 KB Output is correct
106 Correct 1207 ms 24476 KB Output is correct
107 Correct 1187 ms 24476 KB Output is correct
108 Correct 1267 ms 24476 KB Output is correct
109 Correct 1213 ms 24476 KB Output is correct
110 Correct 1208 ms 24476 KB Output is correct
111 Correct 1188 ms 24476 KB Output is correct
112 Correct 1284 ms 24476 KB Output is correct
113 Correct 1219 ms 24476 KB Output is correct
114 Correct 1295 ms 24476 KB Output is correct
115 Correct 1217 ms 24476 KB Output is correct
116 Correct 1129 ms 24476 KB Output is correct