oj.uz

Submission #262987

# Submission time Handle Problem Language Result Execution time Memory
262987 2020-08-13T11:41:17 Z _7_7_ Circle selection (APIO18_circle_selection) C++14
100 / 100
 2972 ms 48092 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 6 ms 7400 KB Output is correct
5 Correct 5 ms 7424 KB Output is correct
6 Correct 5 ms 7424 KB Output is correct
7 Correct 5 ms 7424 KB Output is correct
8 Correct 5 ms 7424 KB Output is correct
9 Correct 5 ms 7424 KB Output is correct
10 Correct 7 ms 7424 KB Output is correct
11 Correct 6 ms 7424 KB Output is correct
12 Correct 5 ms 7424 KB Output is correct
13 Correct 5 ms 7424 KB Output is correct
14 Correct 5 ms 7424 KB Output is correct
15 Correct 7 ms 7424 KB Output is correct
16 Correct 6 ms 7424 KB Output is correct
17 Correct 8 ms 7424 KB Output is correct
18 Correct 7 ms 7424 KB Output is correct
19 Correct 9 ms 7936 KB Output is correct
20 Correct 11 ms 7936 KB Output is correct
21 Correct 10 ms 7936 KB Output is correct
22 Correct 37 ms 8064 KB Output is correct
23 Correct 34 ms 8064 KB Output is correct
24 Correct 28 ms 8064 KB Output is correct
25 Correct 24 ms 8128 KB Output is correct
26 Correct 21 ms 8064 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 265 ms 31716 KB Output is correct
2 Correct 303 ms 29352 KB Output is correct
3 Correct 284 ms 29024 KB Output is correct
4 Correct 242 ms 32688 KB Output is correct
5 Correct 346 ms 22948 KB Output is correct
6 Correct 1004 ms 32384 KB Output is correct
7 Correct 433 ms 23900 KB Output is correct
8 Correct 639 ms 25464 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 7424 KB Output is correct
2 Correct 672 ms 20188 KB Output is correct
3 Correct 2556 ms 45240 KB Output is correct
4 Correct 2607 ms 45392 KB Output is correct
5 Correct 2548 ms 40756 KB Output is correct
6 Correct 804 ms 23776 KB Output is correct
7 Correct 314 ms 16620 KB Output is correct
8 Correct 49 ms 9588 KB Output is correct
9 Correct 2918 ms 44776 KB Output is correct
10 Correct 2177 ms 39848 KB Output is correct

Subtask #4
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1981 ms 45360 KB Output is correct
2 Correct 1486 ms 45376 KB Output is correct
3 Correct 700 ms 29020 KB Output is correct
4 Correct 1703 ms 45532 KB Output is correct
5 Correct 1579 ms 45400 KB Output is correct
6 Correct 428 ms 24320 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 6 ms 7400 KB Output is correct
5 Correct 5 ms 7424 KB Output is correct
6 Correct 5 ms 7424 KB Output is correct
7 Correct 5 ms 7424 KB Output is correct
8 Correct 5 ms 7424 KB Output is correct
9 Correct 5 ms 7424 KB Output is correct
10 Correct 7 ms 7424 KB Output is correct
11 Correct 6 ms 7424 KB Output is correct
12 Correct 5 ms 7424 KB Output is correct
13 Correct 5 ms 7424 KB Output is correct
14 Correct 5 ms 7424 KB Output is correct
15 Correct 7 ms 7424 KB Output is correct
16 Correct 6 ms 7424 KB Output is correct
17 Correct 8 ms 7424 KB Output is correct
18 Correct 7 ms 7424 KB Output is correct
19 Correct 9 ms 7936 KB Output is correct
20 Correct 11 ms 7936 KB Output is correct
21 Correct 10 ms 7936 KB Output is correct
22 Correct 37 ms 8064 KB Output is correct
23 Correct 34 ms 8064 KB Output is correct
24 Correct 28 ms 8064 KB Output is correct
25 Correct 24 ms 8128 KB Output is correct
26 Correct 21 ms 8064 KB Output is correct
27 Correct 15 ms 8464 KB Output is correct
28 Correct 15 ms 8448 KB Output is correct
29 Correct 15 ms 8464 KB Output is correct
30 Correct 41 ms 8832 KB Output is correct
31 Correct 45 ms 8832 KB Output is correct
32 Correct 53 ms 8824 KB Output is correct
33 Correct 106 ms 15320 KB Output is correct
34 Correct 92 ms 15476 KB Output is correct
35 Correct 98 ms 15596 KB Output is correct
36 Correct 510 ms 20712 KB Output is correct
37 Correct 510 ms 20704 KB Output is correct
38 Correct 529 ms 20716 KB Output is correct
39 Correct 532 ms 20472 KB Output is correct
40 Correct 503 ms 20460 KB Output is correct
41 Correct 495 ms 20520 KB Output is correct
42 Correct 478 ms 20712 KB Output is correct
43 Correct 360 ms 20528 KB Output is correct
44 Correct 380 ms 20588 KB Output is correct
45 Correct 366 ms 20520 KB Output is correct
46 Correct 385 ms 20584 KB Output is correct
47 Correct 375 ms 20520 KB Output is correct
48 Correct 392 ms 20588 KB Output is correct
49 Correct 386 ms 20592 KB Output is correct
50 Correct 413 ms 20588 KB Output is correct

Subtask #6
13.0 / 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 6 ms 7400 KB Output is correct
5 Correct 5 ms 7424 KB Output is correct
6 Correct 5 ms 7424 KB Output is correct
7 Correct 5 ms 7424 KB Output is correct
8 Correct 5 ms 7424 KB Output is correct
9 Correct 5 ms 7424 KB Output is correct
10 Correct 7 ms 7424 KB Output is correct
11 Correct 6 ms 7424 KB Output is correct
12 Correct 5 ms 7424 KB Output is correct
13 Correct 5 ms 7424 KB Output is correct
14 Correct 5 ms 7424 KB Output is correct
15 Correct 7 ms 7424 KB Output is correct
16 Correct 6 ms 7424 KB Output is correct
17 Correct 8 ms 7424 KB Output is correct
18 Correct 7 ms 7424 KB Output is correct
19 Correct 9 ms 7936 KB Output is correct
20 Correct 11 ms 7936 KB Output is correct
21 Correct 10 ms 7936 KB Output is correct
22 Correct 37 ms 8064 KB Output is correct
23 Correct 34 ms 8064 KB Output is correct
24 Correct 28 ms 8064 KB Output is correct
25 Correct 24 ms 8128 KB Output is correct
26 Correct 21 ms 8064 KB Output is correct
27 Correct 265 ms 31716 KB Output is correct
28 Correct 303 ms 29352 KB Output is correct
29 Correct 284 ms 29024 KB Output is correct
30 Correct 242 ms 32688 KB Output is correct
31 Correct 346 ms 22948 KB Output is correct
32 Correct 1004 ms 32384 KB Output is correct
33 Correct 433 ms 23900 KB Output is correct
34 Correct 639 ms 25464 KB Output is correct
35 Correct 5 ms 7424 KB Output is correct
36 Correct 672 ms 20188 KB Output is correct
37 Correct 2556 ms 45240 KB Output is correct
38 Correct 2607 ms 45392 KB Output is correct
39 Correct 2548 ms 40756 KB Output is correct
40 Correct 804 ms 23776 KB Output is correct
41 Correct 314 ms 16620 KB Output is correct
42 Correct 49 ms 9588 KB Output is correct
43 Correct 2918 ms 44776 KB Output is correct
44 Correct 2177 ms 39848 KB Output is correct
45 Correct 1981 ms 45360 KB Output is correct
46 Correct 1486 ms 45376 KB Output is correct
47 Correct 700 ms 29020 KB Output is correct
48 Correct 1703 ms 45532 KB Output is correct
49 Correct 1579 ms 45400 KB Output is correct
50 Correct 428 ms 24320 KB Output is correct
51 Correct 15 ms 8464 KB Output is correct
52 Correct 15 ms 8448 KB Output is correct
53 Correct 15 ms 8464 KB Output is correct
54 Correct 41 ms 8832 KB Output is correct
55 Correct 45 ms 8832 KB Output is correct
56 Correct 53 ms 8824 KB Output is correct
57 Correct 106 ms 15320 KB Output is correct
58 Correct 92 ms 15476 KB Output is correct
59 Correct 98 ms 15596 KB Output is correct
60 Correct 510 ms 20712 KB Output is correct
61 Correct 510 ms 20704 KB Output is correct
62 Correct 529 ms 20716 KB Output is correct
63 Correct 532 ms 20472 KB Output is correct
64 Correct 503 ms 20460 KB Output is correct
65 Correct 495 ms 20520 KB Output is correct
66 Correct 478 ms 20712 KB Output is correct
67 Correct 360 ms 20528 KB Output is correct
68 Correct 380 ms 20588 KB Output is correct
69 Correct 366 ms 20520 KB Output is correct
70 Correct 385 ms 20584 KB Output is correct
71 Correct 375 ms 20520 KB Output is correct
72 Correct 392 ms 20588 KB Output is correct
73 Correct 386 ms 20592 KB Output is correct
74 Correct 413 ms 20588 KB Output is correct
75 Correct 310 ms 33680 KB Output is correct
76 Correct 287 ms 30908 KB Output is correct
77 Correct 259 ms 33628 KB Output is correct
78 Correct 259 ms 33712 KB Output is correct
79 Correct 354 ms 25564 KB Output is correct
80 Correct 258 ms 33380 KB Output is correct
81 Correct 2517 ms 46568 KB Output is correct
82 Correct 2396 ms 46508 KB Output is correct
83 Correct 2422 ms 46444 KB Output is correct
84 Correct 2972 ms 46428 KB Output is correct
85 Correct 2302 ms 46464 KB Output is correct
86 Correct 2390 ms 46676 KB Output is correct
87 Correct 2766 ms 46756 KB Output is correct
88 Correct 2323 ms 46304 KB Output is correct
89 Correct 2079 ms 46540 KB Output is correct
90 Correct 2049 ms 45744 KB Output is correct
91 Correct 1950 ms 46544 KB Output is correct
92 Correct 2112 ms 45896 KB Output is correct
93 Correct 2067 ms 48092 KB Output is correct
94 Correct 2001 ms 47788 KB Output is correct
95 Correct 1847 ms 47512 KB Output is correct
96 Correct 1897 ms 47424 KB Output is correct
97 Correct 2961 ms 47104 KB Output is correct
98 Correct 1346 ms 37252 KB Output is correct
99 Correct 2036 ms 45312 KB Output is correct
100 Correct 1914 ms 45404 KB Output is correct
101 Correct 2070 ms 40320 KB Output is correct
102 Correct 2057 ms 45020 KB Output is correct
103 Correct 2668 ms 45120 KB Output is correct
104 Correct 1870 ms 45320 KB Output is correct
105 Correct 1818 ms 45008 KB Output is correct
106 Correct 1649 ms 43740 KB Output is correct
107 Correct 1397 ms 43848 KB Output is correct
108 Correct 1413 ms 43796 KB Output is correct
109 Correct 1405 ms 43884 KB Output is correct
110 Correct 1457 ms 43740 KB Output is correct
111 Correct 1519 ms 43780 KB Output is correct
112 Correct 1508 ms 44528 KB Output is correct
113 Correct 1550 ms 44552 KB Output is correct
114 Correct 1446 ms 44552 KB Output is correct
115 Correct 1433 ms 44536 KB Output is correct
116 Correct 1270 ms 44252 KB Output is correct