답안 #49279 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
49279	2018-05-24T17:58:43 Z	zadrga	원 고르기 (APIO18_circle_selection)	C++14	100 / 100	1924 ms	24164 KB

circle_selection

#include <bits/stdc++.h>

using namespace std;

#define pb push_back
#define mp make_pair
#define fi first
#define se second
#define INF (1LL << 55)
#define MOD (1000 * 1000 * 1000 + 7)
#define maxn 300111

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

struct circle{
	ll x, y, r;
	int ind;
} c[maxn], a[maxn];

bool used[maxn];
int ans[maxn], order[maxn];
int n, cur_r, next_r;

bool operator<(circle a, circle b){
	if(a.x == b.x)	
		return a.y < b.y;

	return a.x < b.x;
}

bool comp(int x, int y){
	if(a[x].r == a[y].r)
		return a[x].ind < a[y].ind;

	return a[x].r > a[y].r;
}

void rescale(){
	cur_r = next_r;
	next_r = cur_r / 2;

	for(int i = 1; i <= n; i++){
		int cur = c[i].ind;
		c[i].x = a[cur].x / cur_r;
		c[i].y = a[cur].y / cur_r;
	}

	sort(c + 1, c + 1 + n);
}

bool intersection(circle &a, circle &b){
	ll dist_center = (a.x - b.x) * (a.x - b.x) + (a.y - b.y) * (a.y - b.y);
	ll dist_r = (a.r + b.r) * (a.r + b.r);
	return dist_center <= dist_r;
}

void solve(int cur){
	int pos_x = a[cur].x / cur_r;
	int pos_y = a[cur].y / cur_r;

	ans[cur] = cur;
	used[cur] = 1;

	for(int cur_x = pos_x - 2; cur_x <= pos_x + 2; cur_x++){
		int it = lower_bound(c + 1, c + 1 + n, (circle) {cur_x, pos_y - 2, -1, -1}) - c;
		while(it <= n && c[it].x == cur_x && c[it].y <= pos_y + 2){
			if(!used[c[it].ind] && intersection(a[c[it].ind], a[cur])){
				ans[c[it].ind] = cur;
				used[c[it].ind] = 1;
			}
			it++;
		}
	}
}

int main(){
	scanf("%d", &n);
	for(int i = 1; i <= n; i++){
		ll x, y, r;
		scanf("%lld%lld%lld", &x, &y, &r);
		a[i] = c[i] = {x, y, r, i};
		order[i] = i;
	}
	
	sort(order + 1, order + 1 + n, comp);

	next_r = a[order[1]].r; 
	rescale();

	for(int i = 1; i <= n; i++){
		if(used[order[i]])
			continue;

		if(a[order[i]].r <= next_r)
			rescale();

		solve(order[i]);
	}

	for(int i = 1; i <= n; i++)
		printf("%d ", ans[i]);

	return 0;
}

Compilation message

circle_selection.cpp: In function 'int main()':
circle_selection.cpp:79:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
  ~~~~~^~~~~~~~~~
circle_selection.cpp:82:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld%lld%lld", &x, &y, &r);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

#	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	408 KB	Output is correct
4	Correct	2 ms	408 KB	Output is correct
5	Correct	2 ms	468 KB	Output is correct
6	Correct	2 ms	468 KB	Output is correct
7	Correct	2 ms	484 KB	Output is correct
8	Correct	2 ms	484 KB	Output is correct
9	Correct	2 ms	544 KB	Output is correct
10	Correct	3 ms	544 KB	Output is correct
11	Correct	2 ms	560 KB	Output is correct
12	Correct	3 ms	560 KB	Output is correct
13	Correct	2 ms	560 KB	Output is correct
14	Correct	2 ms	560 KB	Output is correct
15	Correct	2 ms	620 KB	Output is correct
16	Correct	4 ms	620 KB	Output is correct
17	Correct	3 ms	620 KB	Output is correct
18	Correct	3 ms	620 KB	Output is correct
19	Correct	7 ms	1004 KB	Output is correct
20	Correct	6 ms	1004 KB	Output is correct
21	Correct	9 ms	1020 KB	Output is correct
22	Correct	14 ms	1036 KB	Output is correct
23	Correct	14 ms	1052 KB	Output is correct
24	Correct	14 ms	1052 KB	Output is correct
25	Correct	12 ms	1052 KB	Output is correct
26	Correct	12 ms	1052 KB	Output is correct

Subtask #2
12.0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	333 ms	24108 KB	Output is correct
2	Correct	435 ms	24108 KB	Output is correct
3	Correct	310 ms	24108 KB	Output is correct
4	Correct	307 ms	24164 KB	Output is correct
5	Correct	574 ms	24164 KB	Output is correct
6	Correct	742 ms	24164 KB	Output is correct
7	Correct	794 ms	24164 KB	Output is correct
8	Correct	833 ms	24164 KB	Output is correct

Subtask #3
15.0 / 15.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	24164 KB	Output is correct
2	Correct	489 ms	24164 KB	Output is correct
3	Correct	1826 ms	24164 KB	Output is correct
4	Correct	1597 ms	24164 KB	Output is correct
5	Correct	1924 ms	24164 KB	Output is correct
6	Correct	423 ms	24164 KB	Output is correct
7	Correct	203 ms	24164 KB	Output is correct
8	Correct	29 ms	24164 KB	Output is correct
9	Correct	1819 ms	24164 KB	Output is correct
10	Correct	1075 ms	24164 KB	Output is correct

Subtask #4
23.0 / 23.0

#	결과	실행 시간	메모리	Grader output
1	Correct	706 ms	24164 KB	Output is correct
2	Correct	544 ms	24164 KB	Output is correct
3	Correct	347 ms	24164 KB	Output is correct
4	Correct	601 ms	24164 KB	Output is correct
5	Correct	591 ms	24164 KB	Output is correct
6	Correct	321 ms	24164 KB	Output is correct

Subtask #5
30.0 / 30.0

#	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	408 KB	Output is correct
4	Correct	2 ms	408 KB	Output is correct
5	Correct	2 ms	468 KB	Output is correct
6	Correct	2 ms	468 KB	Output is correct
7	Correct	2 ms	484 KB	Output is correct
8	Correct	2 ms	484 KB	Output is correct
9	Correct	2 ms	544 KB	Output is correct
10	Correct	3 ms	544 KB	Output is correct
11	Correct	2 ms	560 KB	Output is correct
12	Correct	3 ms	560 KB	Output is correct
13	Correct	2 ms	560 KB	Output is correct
14	Correct	2 ms	560 KB	Output is correct
15	Correct	2 ms	620 KB	Output is correct
16	Correct	4 ms	620 KB	Output is correct
17	Correct	3 ms	620 KB	Output is correct
18	Correct	3 ms	620 KB	Output is correct
19	Correct	7 ms	1004 KB	Output is correct
20	Correct	6 ms	1004 KB	Output is correct
21	Correct	9 ms	1020 KB	Output is correct
22	Correct	14 ms	1036 KB	Output is correct
23	Correct	14 ms	1052 KB	Output is correct
24	Correct	14 ms	1052 KB	Output is correct
25	Correct	12 ms	1052 KB	Output is correct
26	Correct	12 ms	1052 KB	Output is correct
27	Correct	16 ms	24164 KB	Output is correct
28	Correct	11 ms	24164 KB	Output is correct
29	Correct	11 ms	24164 KB	Output is correct
30	Correct	27 ms	24164 KB	Output is correct
31	Correct	25 ms	24164 KB	Output is correct
32	Correct	25 ms	24164 KB	Output is correct
33	Correct	106 ms	24164 KB	Output is correct
34	Correct	99 ms	24164 KB	Output is correct
35	Correct	352 ms	24164 KB	Output is correct
36	Correct	443 ms	24164 KB	Output is correct
37	Correct	430 ms	24164 KB	Output is correct
38	Correct	458 ms	24164 KB	Output is correct
39	Correct	475 ms	24164 KB	Output is correct
40	Correct	522 ms	24164 KB	Output is correct
41	Correct	505 ms	24164 KB	Output is correct
42	Correct	165 ms	24164 KB	Output is correct
43	Correct	167 ms	24164 KB	Output is correct
44	Correct	164 ms	24164 KB	Output is correct
45	Correct	175 ms	24164 KB	Output is correct
46	Correct	161 ms	24164 KB	Output is correct
47	Correct	151 ms	24164 KB	Output is correct
48	Correct	170 ms	24164 KB	Output is correct
49	Correct	168 ms	24164 KB	Output is correct
50	Correct	152 ms	24164 KB	Output is correct

Subtask #6
13.0 / 13.0

#	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	408 KB	Output is correct
4	Correct	2 ms	408 KB	Output is correct
5	Correct	2 ms	468 KB	Output is correct
6	Correct	2 ms	468 KB	Output is correct
7	Correct	2 ms	484 KB	Output is correct
8	Correct	2 ms	484 KB	Output is correct
9	Correct	2 ms	544 KB	Output is correct
10	Correct	3 ms	544 KB	Output is correct
11	Correct	2 ms	560 KB	Output is correct
12	Correct	3 ms	560 KB	Output is correct
13	Correct	2 ms	560 KB	Output is correct
14	Correct	2 ms	560 KB	Output is correct
15	Correct	2 ms	620 KB	Output is correct
16	Correct	4 ms	620 KB	Output is correct
17	Correct	3 ms	620 KB	Output is correct
18	Correct	3 ms	620 KB	Output is correct
19	Correct	7 ms	1004 KB	Output is correct
20	Correct	6 ms	1004 KB	Output is correct
21	Correct	9 ms	1020 KB	Output is correct
22	Correct	14 ms	1036 KB	Output is correct
23	Correct	14 ms	1052 KB	Output is correct
24	Correct	14 ms	1052 KB	Output is correct
25	Correct	12 ms	1052 KB	Output is correct
26	Correct	12 ms	1052 KB	Output is correct
27	Correct	333 ms	24108 KB	Output is correct
28	Correct	435 ms	24108 KB	Output is correct
29	Correct	310 ms	24108 KB	Output is correct
30	Correct	307 ms	24164 KB	Output is correct
31	Correct	574 ms	24164 KB	Output is correct
32	Correct	742 ms	24164 KB	Output is correct
33	Correct	794 ms	24164 KB	Output is correct
34	Correct	833 ms	24164 KB	Output is correct
35	Correct	3 ms	24164 KB	Output is correct
36	Correct	489 ms	24164 KB	Output is correct
37	Correct	1826 ms	24164 KB	Output is correct
38	Correct	1597 ms	24164 KB	Output is correct
39	Correct	1924 ms	24164 KB	Output is correct
40	Correct	423 ms	24164 KB	Output is correct
41	Correct	203 ms	24164 KB	Output is correct
42	Correct	29 ms	24164 KB	Output is correct
43	Correct	1819 ms	24164 KB	Output is correct
44	Correct	1075 ms	24164 KB	Output is correct
45	Correct	706 ms	24164 KB	Output is correct
46	Correct	544 ms	24164 KB	Output is correct
47	Correct	347 ms	24164 KB	Output is correct
48	Correct	601 ms	24164 KB	Output is correct
49	Correct	591 ms	24164 KB	Output is correct
50	Correct	321 ms	24164 KB	Output is correct
51	Correct	16 ms	24164 KB	Output is correct
52	Correct	11 ms	24164 KB	Output is correct
53	Correct	11 ms	24164 KB	Output is correct
54	Correct	27 ms	24164 KB	Output is correct
55	Correct	25 ms	24164 KB	Output is correct
56	Correct	25 ms	24164 KB	Output is correct
57	Correct	106 ms	24164 KB	Output is correct
58	Correct	99 ms	24164 KB	Output is correct
59	Correct	352 ms	24164 KB	Output is correct
60	Correct	443 ms	24164 KB	Output is correct
61	Correct	430 ms	24164 KB	Output is correct
62	Correct	458 ms	24164 KB	Output is correct
63	Correct	475 ms	24164 KB	Output is correct
64	Correct	522 ms	24164 KB	Output is correct
65	Correct	505 ms	24164 KB	Output is correct
66	Correct	165 ms	24164 KB	Output is correct
67	Correct	167 ms	24164 KB	Output is correct
68	Correct	164 ms	24164 KB	Output is correct
69	Correct	175 ms	24164 KB	Output is correct
70	Correct	161 ms	24164 KB	Output is correct
71	Correct	151 ms	24164 KB	Output is correct
72	Correct	170 ms	24164 KB	Output is correct
73	Correct	168 ms	24164 KB	Output is correct
74	Correct	152 ms	24164 KB	Output is correct
75	Correct	1253 ms	24164 KB	Output is correct
76	Correct	445 ms	24164 KB	Output is correct
77	Correct	301 ms	24164 KB	Output is correct
78	Correct	378 ms	24164 KB	Output is correct
79	Correct	1388 ms	24164 KB	Output is correct
80	Correct	371 ms	24164 KB	Output is correct
81	Correct	1626 ms	24164 KB	Output is correct
82	Correct	1622 ms	24164 KB	Output is correct
83	Correct	1623 ms	24164 KB	Output is correct
84	Correct	1541 ms	24164 KB	Output is correct
85	Correct	1548 ms	24164 KB	Output is correct
86	Correct	1545 ms	24164 KB	Output is correct
87	Correct	1635 ms	24164 KB	Output is correct
88	Correct	1859 ms	24164 KB	Output is correct
89	Correct	1685 ms	24164 KB	Output is correct
90	Correct	1478 ms	24164 KB	Output is correct
91	Correct	1640 ms	24164 KB	Output is correct
92	Correct	1829 ms	24164 KB	Output is correct
93	Correct	992 ms	24164 KB	Output is correct
94	Correct	1287 ms	24164 KB	Output is correct
95	Correct	936 ms	24164 KB	Output is correct
96	Correct	1022 ms	24164 KB	Output is correct
97	Correct	1229 ms	24164 KB	Output is correct
98	Correct	953 ms	24164 KB	Output is correct
99	Correct	958 ms	24164 KB	Output is correct
100	Correct	752 ms	24164 KB	Output is correct
101	Correct	977 ms	24164 KB	Output is correct
102	Correct	969 ms	24164 KB	Output is correct
103	Correct	1330 ms	24164 KB	Output is correct
104	Correct	933 ms	24164 KB	Output is correct
105	Correct	434 ms	24164 KB	Output is correct
106	Correct	532 ms	24164 KB	Output is correct
107	Correct	520 ms	24164 KB	Output is correct
108	Correct	526 ms	24164 KB	Output is correct
109	Correct	522 ms	24164 KB	Output is correct
110	Correct	517 ms	24164 KB	Output is correct
111	Correct	531 ms	24164 KB	Output is correct
112	Correct	496 ms	24164 KB	Output is correct
113	Correct	525 ms	24164 KB	Output is correct
114	Correct	582 ms	24164 KB	Output is correct
115	Correct	540 ms	24164 KB	Output is correct
116	Correct	538 ms	24164 KB	Output is correct

답안 #49279

Compilation message

Subtask #1 7.0 / 7.0

Subtask #2 12.0 / 12.0

Subtask #3 15.0 / 15.0

Subtask #4 23.0 / 23.0

Subtask #5 30.0 / 30.0

Subtask #6 13.0 / 13.0

Subtask #1
7.0 / 7.0

Subtask #2
12.0 / 12.0

Subtask #3
15.0 / 15.0

Subtask #4
23.0 / 23.0

Subtask #5
30.0 / 30.0

Subtask #6
13.0 / 13.0