oj.uz

Submission #262988

# Submission time Handle Problem Language Result Execution time Memory
262988 2020-08-13T11:41:54 Z _7_7_ Circle selection (APIO18_circle_selection) C++14
72 / 100
 3000 ms 44636 KB 
#include <bits/stdc++.h>                                           
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
 
using namespace std;
using namespace __gnu_pbds;
 
//#define int long long
#pragma GCC optimize("Ofast")
#pragma comment(linker, "/stack:200000000")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4")
 
 
#define file(s) freopen(s".in","r",stdin); freopen(s".out","w",stdout);
#define fastio ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0);
#define all(x) x.begin(), x.end()
#define sz(s) (int)s.size()
#define pb push_back
#define ppb pop_back
#define mp make_pair
#define s second
#define f first
 
 
 
 
typedef pair < long long, long long > pll;    
typedef pair < int, int > pii;  
typedef unsigned long long ull;         
typedef vector < pii > vpii;
typedef vector < int > vi;
typedef long double ldb;
typedef long long ll;
typedef double db;
 
typedef tree < int, null_type, less < int >, rb_tree_tag, tree_order_statistics_node_update > ordered_set;
 
const int inf = 1e9, maxn = 2e5 + 48, mod = 998244353, N = 3e5 + 12;
const int dx[] = {1, -1, 0, 0}, dy[] = {0, 0, 1, -1}, block = 300;
const pii base = mp(1171, 3307), Mod = mp(1e9 + 7, 1e9 + 9);
const db eps = 1e-12, pi = acos(-1);
const ll INF = 1e18;
 

struct point {
	int x, y, r, id;
	bool operator < (const point &a) const {
		if (r != a.r)
			return r > a.r;
		return id < a.id;
	}
} a[N];

int n, res[N], bl;
set < pii > q;
vpii vals;
pii b[N];
vi m[N];

inline int getId (pii x) {
	return lower_bound(all(vals), x) - vals.begin();
}

inline bool check (int i, int j) {
	return (a[i].x - a[j].x) * 1ll * (a[i].x - a[j].x) + (a[i].y - a[j].y) * 1ll * (a[i].y - a[j].y) <= (a[i].r + a[j].r) * 1ll * (a[i].r + a[j].r);
}


inline void build () {
	vals.clear();
	q.clear();
	for (int i = 1; i <= n; ++i)
		if (!res[a[i].id]) {
			b[i] = mp(a[i].x / bl, a[i].y / bl);
			vals.pb(b[i]);
			q.insert(b[i]);
		}

	sort(all(vals));
	vals.resize(unique(all(vals)) - vals.begin());

	for (int i = 0; i < sz(vals); ++i)
		m[i].clear();

	for (int i = 1; i <= n; ++i)
		if (!res[a[i].id])
			m[getId(b[i])].pb(i);
}

main () {
	scanf("%d", &n);
	for (int i = 1; i <= n; ++i) {
		scanf("%d%d%d", &a[i].x, &a[i].y, &a[i].r);
		a[i].id = i;
	}

	sort(a + 1, a + 1 + n);
	        	
	bl = a[1].r;
	build();

	for (int i = 1; i <= n; ++i) 
		if (!res[a[i].id]) {
			if (a[i].r + a[i].r <= bl) {
				bl = a[i].r;
				build();
			}

			vector < point > V;
			point Mn;
			Mn.r = -inf;

			for (int c = -2; c <= 2; ++c)
				for (int d = -2; d <= 2; ++d) {
				    pii cur = mp(b[i].f + c, b[i].s + d);
					if (!q.count(cur)) 
						continue;

					int z = getId(cur);	

					for (auto j : m[z])
						if (!res[a[j].id] && check(i, j)) {
							if (a[j] < Mn) 
								Mn = a[j];
							V.pb(a[j]);
						}
				}

			if (Mn < a[i]) {
				res[a[i].id] = Mn.id; 
			    continue;
			}

			res[a[i].id] = a[i].id;
			for (auto j : V)
				res[j.id] = a[i].id;
		}
	
	for (int i = 1; i <= n; ++i)
		printf("%d ", res[i]);
}

Compilation message

circle_selection.cpp:10: warning: ignoring #pragma comment  [-Wunknown-pragmas]
   10 | #pragma comment(linker, "/stack:200000000")
      | 
circle_selection.cpp:90:7: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   90 | main () {
      |       ^
circle_selection.cpp: In function 'int main()':
circle_selection.cpp:91:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   91 |  scanf("%d", &n);
      |  ~~~~~^~~~~~~~~~
circle_selection.cpp:93:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   93 |   scanf("%d%d%d", &a[i].x, &a[i].y, &a[i].r);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
circle_selection.cpp:130:18: warning: 'Mn.point::id' may be used uninitialized in this function [-Wmaybe-uninitialized]
  130 |     res[a[i].id] = Mn.id;
      |     ~~~~~~~~~~~~~^~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 7424 KB Output is correct
2 Correct 5 ms 7424 KB Output is correct
3 Correct 5 ms 7424 KB Output is correct
4 Correct 5 ms 7424 KB Output is correct
5 Correct 5 ms 7424 KB Output is correct
6 Correct 5 ms 7424 KB Output is correct
7 Correct 6 ms 7424 KB Output is correct
8 Correct 5 ms 7424 KB Output is correct
9 Correct 6 ms 7424 KB Output is correct
10 Correct 6 ms 7424 KB Output is correct
11 Correct 6 ms 7424 KB Output is correct
12 Correct 7 ms 7424 KB Output is correct
13 Correct 5 ms 7424 KB Output is correct
14 Correct 6 ms 7424 KB Output is correct
15 Correct 5 ms 7424 KB Output is correct
16 Correct 6 ms 7552 KB Output is correct
17 Correct 6 ms 7424 KB Output is correct
18 Correct 6 ms 7424 KB Output is correct
19 Correct 10 ms 7936 KB Output is correct
20 Correct 9 ms 7936 KB Output is correct
21 Correct 10 ms 7936 KB Output is correct
22 Correct 21 ms 8064 KB Output is correct
23 Correct 24 ms 8064 KB Output is correct
24 Correct 21 ms 8064 KB Output is correct
25 Correct 20 ms 8064 KB Output is correct
26 Correct 21 ms 8132 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 235 ms 30948 KB Output is correct
2 Correct 249 ms 28840 KB Output is correct
3 Correct 273 ms 28256 KB Output is correct
4 Correct 246 ms 31972 KB Output is correct
5 Correct 374 ms 22800 KB Output is correct
6 Correct 1010 ms 32196 KB Output is correct
7 Correct 434 ms 23772 KB Output is correct
8 Correct 527 ms 25308 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 7424 KB Output is correct
2 Correct 583 ms 20076 KB Output is correct
3 Correct 2375 ms 44460 KB Output is correct
4 Correct 2324 ms 44524 KB Output is correct
5 Correct 2553 ms 39788 KB Output is correct
6 Correct 840 ms 23548 KB Output is correct
7 Correct 321 ms 16360 KB Output is correct
8 Correct 47 ms 9460 KB Output is correct
9 Execution timed out 3074 ms 41952 KB Time limit exceeded
10 Halted 0 ms 0 KB -

Subtask #4
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 2345 ms 44404 KB Output is correct
2 Correct 1502 ms 44292 KB Output is correct
3 Correct 759 ms 27888 KB Output is correct
4 Correct 1548 ms 44460 KB Output is correct
5 Correct 1397 ms 44636 KB Output is correct
6 Correct 403 ms 23556 KB Output is correct

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 7424 KB Output is correct
2 Correct 5 ms 7424 KB Output is correct
3 Correct 5 ms 7424 KB Output is correct
4 Correct 5 ms 7424 KB Output is correct
5 Correct 5 ms 7424 KB Output is correct
6 Correct 5 ms 7424 KB Output is correct
7 Correct 6 ms 7424 KB Output is correct
8 Correct 5 ms 7424 KB Output is correct
9 Correct 6 ms 7424 KB Output is correct
10 Correct 6 ms 7424 KB Output is correct
11 Correct 6 ms 7424 KB Output is correct
12 Correct 7 ms 7424 KB Output is correct
13 Correct 5 ms 7424 KB Output is correct
14 Correct 6 ms 7424 KB Output is correct
15 Correct 5 ms 7424 KB Output is correct
16 Correct 6 ms 7552 KB Output is correct
17 Correct 6 ms 7424 KB Output is correct
18 Correct 6 ms 7424 KB Output is correct
19 Correct 10 ms 7936 KB Output is correct
20 Correct 9 ms 7936 KB Output is correct
21 Correct 10 ms 7936 KB Output is correct
22 Correct 21 ms 8064 KB Output is correct
23 Correct 24 ms 8064 KB Output is correct
24 Correct 21 ms 8064 KB Output is correct
25 Correct 20 ms 8064 KB Output is correct
26 Correct 21 ms 8132 KB Output is correct
27 Correct 14 ms 8336 KB Output is correct
28 Correct 18 ms 8352 KB Output is correct
29 Correct 18 ms 8336 KB Output is correct
30 Correct 41 ms 8704 KB Output is correct
31 Correct 48 ms 8700 KB Output is correct
32 Correct 38 ms 8576 KB Output is correct
33 Correct 157 ms 14060 KB Output is correct
34 Correct 175 ms 14188 KB Output is correct
35 Correct 193 ms 14188 KB Output is correct
36 Correct 686 ms 19308 KB Output is correct
37 Correct 526 ms 19436 KB Output is correct
38 Correct 590 ms 19440 KB Output is correct
39 Correct 551 ms 19420 KB Output is correct
40 Correct 515 ms 19564 KB Output is correct
41 Correct 601 ms 19424 KB Output is correct
42 Correct 504 ms 19308 KB Output is correct
43 Correct 397 ms 19240 KB Output is correct
44 Correct 393 ms 19304 KB Output is correct
45 Correct 375 ms 19308 KB Output is correct
46 Correct 393 ms 19324 KB Output is correct
47 Correct 406 ms 19308 KB Output is correct
48 Correct 410 ms 19324 KB Output is correct
49 Correct 408 ms 19436 KB Output is correct
50 Correct 379 ms 19432 KB Output is correct

Subtask #6
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 7424 KB Output is correct
2 Correct 5 ms 7424 KB Output is correct
3 Correct 5 ms 7424 KB Output is correct
4 Correct 5 ms 7424 KB Output is correct
5 Correct 5 ms 7424 KB Output is correct
6 Correct 5 ms 7424 KB Output is correct
7 Correct 6 ms 7424 KB Output is correct
8 Correct 5 ms 7424 KB Output is correct
9 Correct 6 ms 7424 KB Output is correct
10 Correct 6 ms 7424 KB Output is correct
11 Correct 6 ms 7424 KB Output is correct
12 Correct 7 ms 7424 KB Output is correct
13 Correct 5 ms 7424 KB Output is correct
14 Correct 6 ms 7424 KB Output is correct
15 Correct 5 ms 7424 KB Output is correct
16 Correct 6 ms 7552 KB Output is correct
17 Correct 6 ms 7424 KB Output is correct
18 Correct 6 ms 7424 KB Output is correct
19 Correct 10 ms 7936 KB Output is correct
20 Correct 9 ms 7936 KB Output is correct
21 Correct 10 ms 7936 KB Output is correct
22 Correct 21 ms 8064 KB Output is correct
23 Correct 24 ms 8064 KB Output is correct
24 Correct 21 ms 8064 KB Output is correct
25 Correct 20 ms 8064 KB Output is correct
26 Correct 21 ms 8132 KB Output is correct
27 Correct 235 ms 30948 KB Output is correct
28 Correct 249 ms 28840 KB Output is correct
29 Correct 273 ms 28256 KB Output is correct
30 Correct 246 ms 31972 KB Output is correct
31 Correct 374 ms 22800 KB Output is correct
32 Correct 1010 ms 32196 KB Output is correct
33 Correct 434 ms 23772 KB Output is correct
34 Correct 527 ms 25308 KB Output is correct
35 Correct 5 ms 7424 KB Output is correct
36 Correct 583 ms 20076 KB Output is correct
37 Correct 2375 ms 44460 KB Output is correct
38 Correct 2324 ms 44524 KB Output is correct
39 Correct 2553 ms 39788 KB Output is correct
40 Correct 840 ms 23548 KB Output is correct
41 Correct 321 ms 16360 KB Output is correct
42 Correct 47 ms 9460 KB Output is correct
43 Execution timed out 3074 ms 41952 KB Time limit exceeded
44 Halted 0 ms 0 KB -