oj.uz

Submission #835640

# Submission time Handle Problem Language Result Execution time Memory
835640 2023-08-23T17:00:38 Z jamielim Circle selection (APIO18_circle_selection) C++14
100 / 100
 1868 ms 52772 KB 
#include <bits/stdc++.h>
using namespace std;
 
#define fi first
#define se second
#define mp make_pair
#define pb emplace_back
#define ALL(x) x.begin(),x.end()
#define SZ(x) (int)x.size()
typedef long long ll;
typedef pair<int,int> ii;
typedef pair<ii,ii> i4;
typedef vector<int> vi;
const int MOD=1000000007;
const int INF=1012345678;
const ll LLINF=1012345678012345678LL;
const double PI=3.1415926536;
const double EPS=1e-14;
 
int n;
i4 arr[300005];
int X[300005],Y[300005],R[300005];
int proc=0;
int ans[300005];
ll scale=(1LL<<32);
map<ii,vector<int> > m;
 
inline void downscale(){
	m.clear();
	for(int x=proc;x<n;x++){
		i4 i=arr[x];
		if(ans[-i.fi.se]==-1)m[mp(i.se.fi/scale,i.se.se/scale)].pb(-i.fi.se);
	}
}
 
inline bool intersect(int a,int b){
	ll dx=X[a]-X[b];
	ll dy=Y[a]-Y[b];
	ll r=R[a]+R[b];
	return (dx*dx<=r*r-dy*dy);
}
 
int main(){
	scanf("%d",&n);
	for(int i=0;i<n;i++){
		scanf("%d%d%d",&X[i],&Y[i],&R[i]);
		X[i]+=MOD;Y[i]+=MOD;
		arr[i]=mp(mp(R[i],-i),mp(X[i],Y[i]));
	}
	memset(ans,-1,sizeof(ans));
	sort(arr,arr+n);
	reverse(arr,arr+n);
	downscale();
	for(;proc<n;proc++){
		i4 cur=arr[proc];
		int index=-cur.fi.se;
		if(ans[index]!=-1)continue;
		ans[index]=index;
		bool change=0;
		while(scale>2*cur.fi.fi){scale/=2;change=1;}
		if(change)downscale();
		
		int x=cur.se.fi/scale,y=cur.se.se/scale;
		for(int i=x-2;i<=x+2;i++){
			for(int j=y-2;j<=y+2;j++){
				if(m.find(mp(i,j))==m.end())continue;
				vector<int> &v1=m[mp(i,j)];
				vector<int> v2;
				for(int k:v1){
					if(ans[k]==-1&&intersect(k,index)){
						ans[k]=index;
					}else if(ans[k]==-1){
						v2.pb(k);
					}
				}
				swap(m[mp(i,j)],v2);
			}
		}
	}
	for(int i=0;i<n;i++)printf("%d ",ans[i]+1);
}

Compilation message

circle_selection.cpp: In function 'int main()':
circle_selection.cpp:44:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   44 |  scanf("%d",&n);
      |  ~~~~~^~~~~~~~~
circle_selection.cpp:46:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   46 |   scanf("%d%d%d",&X[i],&Y[i],&R[i]);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1492 KB Output is correct
2 Correct 1 ms 1492 KB Output is correct
3 Correct 1 ms 1492 KB Output is correct
4 Correct 1 ms 1492 KB Output is correct
5 Correct 1 ms 1492 KB Output is correct
6 Correct 1 ms 1492 KB Output is correct
7 Correct 1 ms 1492 KB Output is correct
8 Correct 1 ms 1492 KB Output is correct
9 Correct 1 ms 1492 KB Output is correct
10 Correct 1 ms 1492 KB Output is correct
11 Correct 1 ms 1492 KB Output is correct
12 Correct 1 ms 1492 KB Output is correct
13 Correct 1 ms 1492 KB Output is correct
14 Correct 1 ms 1492 KB Output is correct
15 Correct 1 ms 1492 KB Output is correct
16 Correct 1 ms 1492 KB Output is correct
17 Correct 1 ms 1472 KB Output is correct
18 Correct 1 ms 1492 KB Output is correct
19 Correct 3 ms 1620 KB Output is correct
20 Correct 3 ms 1620 KB Output is correct
21 Correct 3 ms 1620 KB Output is correct
22 Correct 12 ms 2180 KB Output is correct
23 Correct 14 ms 2180 KB Output is correct
24 Correct 12 ms 2132 KB Output is correct
25 Correct 13 ms 2132 KB Output is correct
26 Correct 12 ms 2132 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 124 ms 13780 KB Output is correct
2 Correct 123 ms 13664 KB Output is correct
3 Correct 123 ms 14048 KB Output is correct
4 Correct 120 ms 13880 KB Output is correct
5 Correct 169 ms 13984 KB Output is correct
6 Correct 544 ms 24428 KB Output is correct
7 Correct 206 ms 19584 KB Output is correct
8 Correct 260 ms 21880 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1492 KB Output is correct
2 Correct 380 ms 15648 KB Output is correct
3 Correct 1692 ms 52660 KB Output is correct
4 Correct 1588 ms 52580 KB Output is correct
5 Correct 1608 ms 46964 KB Output is correct
6 Correct 501 ms 24216 KB Output is correct
7 Correct 208 ms 13388 KB Output is correct
8 Correct 30 ms 3940 KB Output is correct
9 Correct 1868 ms 51452 KB Output is correct
10 Correct 1437 ms 44176 KB Output is correct

Subtask #4
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1315 ms 44548 KB Output is correct
2 Correct 885 ms 51648 KB Output is correct
3 Correct 330 ms 27664 KB Output is correct
4 Correct 946 ms 51912 KB Output is correct
5 Correct 890 ms 52100 KB Output is correct
6 Correct 179 ms 22716 KB Output is correct

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1492 KB Output is correct
2 Correct 1 ms 1492 KB Output is correct
3 Correct 1 ms 1492 KB Output is correct
4 Correct 1 ms 1492 KB Output is correct
5 Correct 1 ms 1492 KB Output is correct
6 Correct 1 ms 1492 KB Output is correct
7 Correct 1 ms 1492 KB Output is correct
8 Correct 1 ms 1492 KB Output is correct
9 Correct 1 ms 1492 KB Output is correct
10 Correct 1 ms 1492 KB Output is correct
11 Correct 1 ms 1492 KB Output is correct
12 Correct 1 ms 1492 KB Output is correct
13 Correct 1 ms 1492 KB Output is correct
14 Correct 1 ms 1492 KB Output is correct
15 Correct 1 ms 1492 KB Output is correct
16 Correct 1 ms 1492 KB Output is correct
17 Correct 1 ms 1472 KB Output is correct
18 Correct 1 ms 1492 KB Output is correct
19 Correct 3 ms 1620 KB Output is correct
20 Correct 3 ms 1620 KB Output is correct
21 Correct 3 ms 1620 KB Output is correct
22 Correct 12 ms 2180 KB Output is correct
23 Correct 14 ms 2180 KB Output is correct
24 Correct 12 ms 2132 KB Output is correct
25 Correct 13 ms 2132 KB Output is correct
26 Correct 12 ms 2132 KB Output is correct
27 Correct 5 ms 1876 KB Output is correct
28 Correct 5 ms 1876 KB Output is correct
29 Correct 5 ms 1876 KB Output is correct
30 Correct 26 ms 2864 KB Output is correct
31 Correct 26 ms 2892 KB Output is correct
32 Correct 24 ms 2892 KB Output is correct
33 Correct 42 ms 5112 KB Output is correct
34 Correct 41 ms 5044 KB Output is correct
35 Correct 43 ms 5472 KB Output is correct
36 Correct 393 ms 15748 KB Output is correct
37 Correct 319 ms 18332 KB Output is correct
38 Correct 367 ms 18444 KB Output is correct
39 Correct 330 ms 11984 KB Output is correct
40 Correct 335 ms 12060 KB Output is correct
41 Correct 318 ms 12040 KB Output is correct
42 Correct 205 ms 13012 KB Output is correct
43 Correct 224 ms 18032 KB Output is correct
44 Correct 238 ms 18072 KB Output is correct
45 Correct 230 ms 18028 KB Output is correct
46 Correct 224 ms 18040 KB Output is correct
47 Correct 275 ms 18080 KB Output is correct
48 Correct 228 ms 18068 KB Output is correct
49 Correct 222 ms 18108 KB Output is correct
50 Correct 233 ms 18132 KB Output is correct

Subtask #6
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1492 KB Output is correct
2 Correct 1 ms 1492 KB Output is correct
3 Correct 1 ms 1492 KB Output is correct
4 Correct 1 ms 1492 KB Output is correct
5 Correct 1 ms 1492 KB Output is correct
6 Correct 1 ms 1492 KB Output is correct
7 Correct 1 ms 1492 KB Output is correct
8 Correct 1 ms 1492 KB Output is correct
9 Correct 1 ms 1492 KB Output is correct
10 Correct 1 ms 1492 KB Output is correct
11 Correct 1 ms 1492 KB Output is correct
12 Correct 1 ms 1492 KB Output is correct
13 Correct 1 ms 1492 KB Output is correct
14 Correct 1 ms 1492 KB Output is correct
15 Correct 1 ms 1492 KB Output is correct
16 Correct 1 ms 1492 KB Output is correct
17 Correct 1 ms 1472 KB Output is correct
18 Correct 1 ms 1492 KB Output is correct
19 Correct 3 ms 1620 KB Output is correct
20 Correct 3 ms 1620 KB Output is correct
21 Correct 3 ms 1620 KB Output is correct
22 Correct 12 ms 2180 KB Output is correct
23 Correct 14 ms 2180 KB Output is correct
24 Correct 12 ms 2132 KB Output is correct
25 Correct 13 ms 2132 KB Output is correct
26 Correct 12 ms 2132 KB Output is correct
27 Correct 124 ms 13780 KB Output is correct
28 Correct 123 ms 13664 KB Output is correct
29 Correct 123 ms 14048 KB Output is correct
30 Correct 120 ms 13880 KB Output is correct
31 Correct 169 ms 13984 KB Output is correct
32 Correct 544 ms 24428 KB Output is correct
33 Correct 206 ms 19584 KB Output is correct
34 Correct 260 ms 21880 KB Output is correct
35 Correct 1 ms 1492 KB Output is correct
36 Correct 380 ms 15648 KB Output is correct
37 Correct 1692 ms 52660 KB Output is correct
38 Correct 1588 ms 52580 KB Output is correct
39 Correct 1608 ms 46964 KB Output is correct
40 Correct 501 ms 24216 KB Output is correct
41 Correct 208 ms 13388 KB Output is correct
42 Correct 30 ms 3940 KB Output is correct
43 Correct 1868 ms 51452 KB Output is correct
44 Correct 1437 ms 44176 KB Output is correct
45 Correct 1315 ms 44548 KB Output is correct
46 Correct 885 ms 51648 KB Output is correct
47 Correct 330 ms 27664 KB Output is correct
48 Correct 946 ms 51912 KB Output is correct
49 Correct 890 ms 52100 KB Output is correct
50 Correct 179 ms 22716 KB Output is correct
51 Correct 5 ms 1876 KB Output is correct
52 Correct 5 ms 1876 KB Output is correct
53 Correct 5 ms 1876 KB Output is correct
54 Correct 26 ms 2864 KB Output is correct
55 Correct 26 ms 2892 KB Output is correct
56 Correct 24 ms 2892 KB Output is correct
57 Correct 42 ms 5112 KB Output is correct
58 Correct 41 ms 5044 KB Output is correct
59 Correct 43 ms 5472 KB Output is correct
60 Correct 393 ms 15748 KB Output is correct
61 Correct 319 ms 18332 KB Output is correct
62 Correct 367 ms 18444 KB Output is correct
63 Correct 330 ms 11984 KB Output is correct
64 Correct 335 ms 12060 KB Output is correct
65 Correct 318 ms 12040 KB Output is correct
66 Correct 205 ms 13012 KB Output is correct
67 Correct 224 ms 18032 KB Output is correct
68 Correct 238 ms 18072 KB Output is correct
69 Correct 230 ms 18028 KB Output is correct
70 Correct 224 ms 18040 KB Output is correct
71 Correct 275 ms 18080 KB Output is correct
72 Correct 228 ms 18068 KB Output is correct
73 Correct 222 ms 18108 KB Output is correct
74 Correct 233 ms 18132 KB Output is correct
75 Correct 136 ms 22568 KB Output is correct
76 Correct 131 ms 22888 KB Output is correct
77 Correct 133 ms 22532 KB Output is correct
78 Correct 131 ms 22088 KB Output is correct
79 Correct 152 ms 22516 KB Output is correct
80 Correct 125 ms 21812 KB Output is correct
81 Correct 1795 ms 52516 KB Output is correct
82 Correct 1445 ms 52356 KB Output is correct
83 Correct 1645 ms 52288 KB Output is correct
84 Correct 1630 ms 52772 KB Output is correct
85 Correct 1585 ms 52376 KB Output is correct
86 Correct 1446 ms 52464 KB Output is correct
87 Correct 1773 ms 52204 KB Output is correct
88 Correct 1390 ms 33584 KB Output is correct
89 Correct 1264 ms 33468 KB Output is correct
90 Correct 1294 ms 33476 KB Output is correct
91 Correct 1318 ms 33400 KB Output is correct
92 Correct 1372 ms 33456 KB Output is correct
93 Correct 1260 ms 51364 KB Output is correct
94 Correct 1170 ms 51528 KB Output is correct
95 Correct 1307 ms 51364 KB Output is correct
96 Correct 1410 ms 51228 KB Output is correct
97 Correct 1709 ms 51308 KB Output is correct
98 Correct 718 ms 35340 KB Output is correct
99 Correct 1220 ms 51524 KB Output is correct
100 Correct 1168 ms 51348 KB Output is correct
101 Correct 1122 ms 40168 KB Output is correct
102 Correct 1207 ms 50816 KB Output is correct
103 Correct 1829 ms 49964 KB Output is correct
104 Correct 1093 ms 51240 KB Output is correct
105 Correct 924 ms 36276 KB Output is correct
106 Correct 843 ms 50008 KB Output is correct
107 Correct 821 ms 50072 KB Output is correct
108 Correct 838 ms 49964 KB Output is correct
109 Correct 843 ms 50052 KB Output is correct
110 Correct 852 ms 50180 KB Output is correct
111 Correct 864 ms 50012 KB Output is correct
112 Correct 802 ms 50032 KB Output is correct
113 Correct 831 ms 50024 KB Output is correct
114 Correct 901 ms 50036 KB Output is correct
115 Correct 833 ms 50052 KB Output is correct
116 Correct 826 ms 50012 KB Output is correct