oj.uz

Submission #111273

# Submission time Handle Problem Language Result Execution time Memory
111273 2019-05-14T14:40:57 Z diamond_duke Circle selection (APIO18_circle_selection) C++11
100 / 100
 992 ms 36400 KB 
#include <algorithm>
#include <cstdio>
#include <vector>
using ll = long long;
inline ll sqr(int x) { return (ll)x * x; }
struct circle { int x, y, r; } arr[300005], seq[300005];
inline bool operator <(const circle &a, const circle &b) { return a.x < b.x || (a.x == b.x && a.y < b.y); }
inline bool operator !=(const circle &a, const circle &b) { return a < b || b < a; }
inline bool operator ==(const circle &a, const circle &b) { return !(a != b); }
inline bool inter(circle a, circle b) { return sqr(a.x - b.x) + sqr(a.y - b.y) <= sqr(a.r + b.r); }
int ans[300005], ord[300005], n, blk, len;
std::vector<int> vec[300005];
void resize(int sz)
{
	if (blk && blk / 2 < sz)
		return;
	blk = sz;
	int cnt = 0;
	for (int i = 0; i < n; i++)
	{
		if (-1 == ans[i])
			seq[cnt++] = {arr[i].x / blk, arr[i].y / blk, i};
	}
	std::sort(seq, seq + cnt);
	len = 0;
	for (int i = 0, j = 0; i < cnt; i = j)
	{
		while (j < cnt && seq[i] == seq[j])
			j++;
		vec[len].clear();
		for (int k = i; k < j; k++)
			vec[len].push_back(seq[k].r);
		seq[len++] = seq[i];
	}
}
int main()
{
	// freopen("uoj-415.in", "r", stdin);
	scanf("%d", &n);
	for (int i = 0; i < n; i++)
	{
		scanf("%d%d%d", &arr[i].x, &arr[i].y, &arr[i].r);
		arr[i].x += 1e9;
		arr[i].y += 1e9;
		ord[i] = i;
		ans[i] = -1;
	}
	std::sort(ord, ord + n, [&] (int x, int y) { return arr[x].r > arr[y].r || (arr[x].r == arr[y].r && x < y); });
	for (int t = 0; t < n; t++)
	{
		int u = ord[t];
		if (~ans[u])
			continue;
		resize(arr[u].r * 2);
		int x = arr[u].x / blk, y = arr[u].y / blk;
		for (int i = x - 1; i <= x + 1; i++)
		{
			for (int j = y - 1; j <= y + 1; j++)
			{
				circle cur = {i, j, -1};
				int res = std::lower_bound(seq, seq + len, cur) - seq;
				if (res >= len || seq[res] != cur)
					continue;
				std::vector<int> rem;
				for (int v : vec[res])
				{
					if (inter(arr[u], arr[v]))
						ans[v] = u;
					else
						rem.push_back(v);
				}
				std::swap(vec[res], rem);
			}
		}
	}
	for (int i = 0; i < n; i++)
		printf("%d%c", ans[i] + 1, " \n"[i + 1 == n]);
	return 0;
}

Compilation message

circle_selection.cpp: In function 'int main()':
circle_selection.cpp:39:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
  ~~~~~^~~~~~~~~~
circle_selection.cpp:42:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d%d", &arr[i].x, &arr[i].y, &arr[i].r);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 7424 KB Output is correct
2 Correct 8 ms 7424 KB Output is correct
3 Correct 8 ms 7424 KB Output is correct
4 Correct 8 ms 7396 KB Output is correct
5 Correct 8 ms 7424 KB Output is correct
6 Correct 8 ms 7424 KB Output is correct
7 Correct 7 ms 7424 KB Output is correct
8 Correct 7 ms 7424 KB Output is correct
9 Correct 9 ms 7424 KB Output is correct
10 Correct 10 ms 7424 KB Output is correct
11 Correct 9 ms 7424 KB Output is correct
12 Correct 8 ms 7424 KB Output is correct
13 Correct 8 ms 7424 KB Output is correct
14 Correct 33 ms 7424 KB Output is correct
15 Correct 10 ms 7424 KB Output is correct
16 Correct 9 ms 7424 KB Output is correct
17 Correct 9 ms 7424 KB Output is correct
18 Correct 9 ms 7424 KB Output is correct
19 Correct 12 ms 7552 KB Output is correct
20 Correct 12 ms 7552 KB Output is correct
21 Correct 12 ms 7552 KB Output is correct
22 Correct 18 ms 7680 KB Output is correct
23 Correct 18 ms 7680 KB Output is correct
24 Correct 19 ms 7680 KB Output is correct
25 Correct 21 ms 7680 KB Output is correct
26 Correct 21 ms 7680 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 247 ms 18924 KB Output is correct
2 Correct 283 ms 19072 KB Output is correct
3 Correct 245 ms 19072 KB Output is correct
4 Correct 239 ms 19156 KB Output is correct
5 Correct 243 ms 20344 KB Output is correct
6 Correct 405 ms 21752 KB Output is correct
7 Correct 313 ms 20600 KB Output is correct
8 Correct 337 ms 20728 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 7424 KB Output is correct
2 Correct 291 ms 14180 KB Output is correct
3 Correct 839 ms 28080 KB Output is correct
4 Correct 902 ms 36272 KB Output is correct
5 Correct 784 ms 32964 KB Output is correct
6 Correct 298 ms 20668 KB Output is correct
7 Correct 158 ms 14328 KB Output is correct
8 Correct 36 ms 8804 KB Output is correct
9 Correct 945 ms 35704 KB Output is correct
10 Correct 707 ms 33144 KB Output is correct

Subtask #4
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 733 ms 28128 KB Output is correct
2 Correct 683 ms 28280 KB Output is correct
3 Correct 307 ms 20472 KB Output is correct
4 Correct 692 ms 28156 KB Output is correct
5 Correct 682 ms 28152 KB Output is correct
6 Correct 209 ms 19960 KB Output is correct

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 7424 KB Output is correct
2 Correct 8 ms 7424 KB Output is correct
3 Correct 8 ms 7424 KB Output is correct
4 Correct 8 ms 7396 KB Output is correct
5 Correct 8 ms 7424 KB Output is correct
6 Correct 8 ms 7424 KB Output is correct
7 Correct 7 ms 7424 KB Output is correct
8 Correct 7 ms 7424 KB Output is correct
9 Correct 9 ms 7424 KB Output is correct
10 Correct 10 ms 7424 KB Output is correct
11 Correct 9 ms 7424 KB Output is correct
12 Correct 8 ms 7424 KB Output is correct
13 Correct 8 ms 7424 KB Output is correct
14 Correct 33 ms 7424 KB Output is correct
15 Correct 10 ms 7424 KB Output is correct
16 Correct 9 ms 7424 KB Output is correct
17 Correct 9 ms 7424 KB Output is correct
18 Correct 9 ms 7424 KB Output is correct
19 Correct 12 ms 7552 KB Output is correct
20 Correct 12 ms 7552 KB Output is correct
21 Correct 12 ms 7552 KB Output is correct
22 Correct 18 ms 7680 KB Output is correct
23 Correct 18 ms 7680 KB Output is correct
24 Correct 19 ms 7680 KB Output is correct
25 Correct 21 ms 7680 KB Output is correct
26 Correct 21 ms 7680 KB Output is correct
27 Correct 16 ms 7808 KB Output is correct
28 Correct 15 ms 7808 KB Output is correct
29 Correct 16 ms 7808 KB Output is correct
30 Correct 28 ms 8064 KB Output is correct
31 Correct 27 ms 8056 KB Output is correct
32 Correct 34 ms 8084 KB Output is correct
33 Correct 75 ms 11368 KB Output is correct
34 Correct 76 ms 11296 KB Output is correct
35 Correct 102 ms 11452 KB Output is correct
36 Correct 259 ms 14212 KB Output is correct
37 Correct 251 ms 14200 KB Output is correct
38 Correct 241 ms 14328 KB Output is correct
39 Correct 287 ms 13260 KB Output is correct
40 Correct 263 ms 13432 KB Output is correct
41 Correct 273 ms 13340 KB Output is correct
42 Correct 135 ms 11844 KB Output is correct
43 Correct 189 ms 14132 KB Output is correct
44 Correct 181 ms 14176 KB Output is correct
45 Correct 190 ms 14076 KB Output is correct
46 Correct 179 ms 14044 KB Output is correct
47 Correct 185 ms 14072 KB Output is correct
48 Correct 196 ms 14072 KB Output is correct
49 Correct 204 ms 14072 KB Output is correct
50 Correct 210 ms 14200 KB Output is correct

Subtask #6
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 7424 KB Output is correct
2 Correct 8 ms 7424 KB Output is correct
3 Correct 8 ms 7424 KB Output is correct
4 Correct 8 ms 7396 KB Output is correct
5 Correct 8 ms 7424 KB Output is correct
6 Correct 8 ms 7424 KB Output is correct
7 Correct 7 ms 7424 KB Output is correct
8 Correct 7 ms 7424 KB Output is correct
9 Correct 9 ms 7424 KB Output is correct
10 Correct 10 ms 7424 KB Output is correct
11 Correct 9 ms 7424 KB Output is correct
12 Correct 8 ms 7424 KB Output is correct
13 Correct 8 ms 7424 KB Output is correct
14 Correct 33 ms 7424 KB Output is correct
15 Correct 10 ms 7424 KB Output is correct
16 Correct 9 ms 7424 KB Output is correct
17 Correct 9 ms 7424 KB Output is correct
18 Correct 9 ms 7424 KB Output is correct
19 Correct 12 ms 7552 KB Output is correct
20 Correct 12 ms 7552 KB Output is correct
21 Correct 12 ms 7552 KB Output is correct
22 Correct 18 ms 7680 KB Output is correct
23 Correct 18 ms 7680 KB Output is correct
24 Correct 19 ms 7680 KB Output is correct
25 Correct 21 ms 7680 KB Output is correct
26 Correct 21 ms 7680 KB Output is correct
27 Correct 247 ms 18924 KB Output is correct
28 Correct 283 ms 19072 KB Output is correct
29 Correct 245 ms 19072 KB Output is correct
30 Correct 239 ms 19156 KB Output is correct
31 Correct 243 ms 20344 KB Output is correct
32 Correct 405 ms 21752 KB Output is correct
33 Correct 313 ms 20600 KB Output is correct
34 Correct 337 ms 20728 KB Output is correct
35 Correct 8 ms 7424 KB Output is correct
36 Correct 291 ms 14180 KB Output is correct
37 Correct 839 ms 28080 KB Output is correct
38 Correct 902 ms 36272 KB Output is correct
39 Correct 784 ms 32964 KB Output is correct
40 Correct 298 ms 20668 KB Output is correct
41 Correct 158 ms 14328 KB Output is correct
42 Correct 36 ms 8804 KB Output is correct
43 Correct 945 ms 35704 KB Output is correct
44 Correct 707 ms 33144 KB Output is correct
45 Correct 733 ms 28128 KB Output is correct
46 Correct 683 ms 28280 KB Output is correct
47 Correct 307 ms 20472 KB Output is correct
48 Correct 692 ms 28156 KB Output is correct
49 Correct 682 ms 28152 KB Output is correct
50 Correct 209 ms 19960 KB Output is correct
51 Correct 16 ms 7808 KB Output is correct
52 Correct 15 ms 7808 KB Output is correct
53 Correct 16 ms 7808 KB Output is correct
54 Correct 28 ms 8064 KB Output is correct
55 Correct 27 ms 8056 KB Output is correct
56 Correct 34 ms 8084 KB Output is correct
57 Correct 75 ms 11368 KB Output is correct
58 Correct 76 ms 11296 KB Output is correct
59 Correct 102 ms 11452 KB Output is correct
60 Correct 259 ms 14212 KB Output is correct
61 Correct 251 ms 14200 KB Output is correct
62 Correct 241 ms 14328 KB Output is correct
63 Correct 287 ms 13260 KB Output is correct
64 Correct 263 ms 13432 KB Output is correct
65 Correct 273 ms 13340 KB Output is correct
66 Correct 135 ms 11844 KB Output is correct
67 Correct 189 ms 14132 KB Output is correct
68 Correct 181 ms 14176 KB Output is correct
69 Correct 190 ms 14076 KB Output is correct
70 Correct 179 ms 14044 KB Output is correct
71 Correct 185 ms 14072 KB Output is correct
72 Correct 196 ms 14072 KB Output is correct
73 Correct 204 ms 14072 KB Output is correct
74 Correct 210 ms 14200 KB Output is correct
75 Correct 266 ms 28708 KB Output is correct
76 Correct 253 ms 29196 KB Output is correct
77 Correct 253 ms 27888 KB Output is correct
78 Correct 261 ms 28068 KB Output is correct
79 Correct 297 ms 28368 KB Output is correct
80 Correct 255 ms 28388 KB Output is correct
81 Correct 895 ms 36216 KB Output is correct
82 Correct 936 ms 36088 KB Output is correct
83 Correct 885 ms 36064 KB Output is correct
84 Correct 917 ms 36400 KB Output is correct
85 Correct 992 ms 36140 KB Output is correct
86 Correct 855 ms 36144 KB Output is correct
87 Correct 908 ms 35952 KB Output is correct
88 Correct 968 ms 30524 KB Output is correct
89 Correct 891 ms 29156 KB Output is correct
90 Correct 922 ms 29476 KB Output is correct
91 Correct 936 ms 29544 KB Output is correct
92 Correct 932 ms 28456 KB Output is correct
93 Correct 757 ms 35068 KB Output is correct
94 Correct 927 ms 35688 KB Output is correct
95 Correct 766 ms 35064 KB Output is correct
96 Correct 736 ms 35128 KB Output is correct
97 Correct 906 ms 35064 KB Output is correct
98 Correct 519 ms 29048 KB Output is correct
99 Correct 832 ms 35216 KB Output is correct
100 Correct 724 ms 35036 KB Output is correct
101 Correct 705 ms 30492 KB Output is correct
102 Correct 760 ms 34780 KB Output is correct
103 Correct 915 ms 34672 KB Output is correct
104 Correct 723 ms 34952 KB Output is correct
105 Correct 453 ms 25848 KB Output is correct
106 Correct 607 ms 34808 KB Output is correct
107 Correct 659 ms 34696 KB Output is correct
108 Correct 627 ms 34724 KB Output is correct
109 Correct 612 ms 34680 KB Output is correct
110 Correct 685 ms 34684 KB Output is correct
111 Correct 695 ms 34800 KB Output is correct
112 Correct 625 ms 34564 KB Output is correct
113 Correct 608 ms 34584 KB Output is correct
114 Correct 627 ms 34580 KB Output is correct
115 Correct 595 ms 34680 KB Output is correct
116 Correct 629 ms 34692 KB Output is correct