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Submission #348336

# Submission time Handle Problem Language Result Execution time Memory
348336 2021-01-14T16:43:08 Z denkendoemeer Circle selection (APIO18_circle_selection) C++14
100 / 100
 1476 ms 27352 KB 
#include<bits/stdc++.h>
using namespace std;
struct cerc
{
    int x,y,r,id;
    bool operator < (const cerc &a) const
    {
        return make_pair(x,y)<make_pair(a.x,a.y);
    }
}v[300005],orig[300005];
const int nr=1e9+100;
int ans[300005];
bool inter(cerc a,cerc b)
{
    int dx=a.x-b.x,dy=a.y-b.y,dr=a.r+b.r;
    if (1LL*dx*dx+1LL*dy*dy<=1LL*dr*dr)
        return 1;
    return 0;
}
int cmp(const cerc &a,const cerc &b)
{
    return make_pair(-a.r,a.id)<make_pair(-b.r,b.id);
}
vector<cerc>aux;
int main()
{
    //freopen(".in","r",stdin);
    //freopen(".out","w",stdout);
    int n,i,off,j;
    scanf("%d",&n);
    for(i=0;i<n;i++){
        scanf("%d%d%d",&v[i].x,&v[i].y,&v[i].r);
        v[i].x+=nr;
        v[i].y+=nr;
        v[i].id=i+1;
        orig[i+1]=v[i];
    }
    sort(v,v+n,cmp);
    for(i=30;i>=1;i--){
        int st,dr;
        st=1<<(i-1);
        dr=(1<<i)-1;
        aux.clear();
        for(j=0;j<n;j++)
            if (ans[v[j].id]==0 && v[j].r<=dr)
                aux.push_back({v[j].x>>i,v[j].y>>i,v[j].r,v[j].id});
        sort(aux.begin(),aux.end());
        for(j=0;j<n;j++)
            if (ans[v[j].id]==0 && v[j].r>=st && v[j].r<=dr){
                for(off=-2;off<=2;off++){
                    int auxx=(v[j].x>>i)+off,auxy=(v[j].y>>i)-2;
                    auto it=lower_bound(aux.begin(),aux.end(),(cerc){auxx,auxy,-1,-1})-aux.begin();
                    while(it<aux.size() && make_pair(aux[it].x,aux[it].y)<=make_pair(auxx,auxy+4)){
                        if (inter(orig[aux[it].id],v[j]) && ans[aux[it].id]==0)
                            ans[aux[it].id]=v[j].id;
                        it++;
                    }
                }
            }
    }
    for(i=1;i<=n;i++)
        printf("%d ",ans[i]);
return 0;
}

Compilation message

circle_selection.cpp: In function 'int main()':
circle_selection.cpp:53:29: warning: comparison of integer expressions of different signedness: 'long int' and 'std::vector<cerc>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   53 |                     while(it<aux.size() && make_pair(aux[it].x,aux[it].y)<=make_pair(auxx,auxy+4)){
      |                           ~~^~~~~~~~~~~
circle_selection.cpp:30:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   30 |     scanf("%d",&n);
      |     ~~~~~^~~~~~~~~
circle_selection.cpp:32:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   32 |         scanf("%d%d%d",&v[i].x,&v[i].y,&v[i].r);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 492 KB Output is correct
17 Correct 1 ms 492 KB Output is correct
18 Correct 1 ms 492 KB Output is correct
19 Correct 5 ms 876 KB Output is correct
20 Correct 4 ms 876 KB Output is correct
21 Correct 4 ms 876 KB Output is correct
22 Correct 13 ms 876 KB Output is correct
23 Correct 14 ms 884 KB Output is correct
24 Correct 13 ms 876 KB Output is correct
25 Correct 14 ms 876 KB Output is correct
26 Correct 13 ms 1004 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 288 ms 24920 KB Output is correct
2 Correct 293 ms 24792 KB Output is correct
3 Correct 289 ms 24792 KB Output is correct
4 Correct 263 ms 24792 KB Output is correct
5 Correct 594 ms 22744 KB Output is correct
6 Correct 790 ms 22744 KB Output is correct
7 Correct 624 ms 22872 KB Output is correct
8 Correct 653 ms 22744 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 292 ms 8924 KB Output is correct
3 Correct 1056 ms 26328 KB Output is correct
4 Correct 1036 ms 26200 KB Output is correct
5 Correct 931 ms 25944 KB Output is correct
6 Correct 428 ms 13788 KB Output is correct
7 Correct 218 ms 7392 KB Output is correct
8 Correct 42 ms 2024 KB Output is correct
9 Correct 1038 ms 26328 KB Output is correct
10 Correct 854 ms 26456 KB Output is correct

Subtask #4
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1022 ms 25944 KB Output is correct
2 Correct 1476 ms 25304 KB Output is correct
3 Correct 529 ms 26456 KB Output is correct
4 Correct 1169 ms 25560 KB Output is correct
5 Correct 1148 ms 25688 KB Output is correct
6 Correct 457 ms 26584 KB Output is correct

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 492 KB Output is correct
17 Correct 1 ms 492 KB Output is correct
18 Correct 1 ms 492 KB Output is correct
19 Correct 5 ms 876 KB Output is correct
20 Correct 4 ms 876 KB Output is correct
21 Correct 4 ms 876 KB Output is correct
22 Correct 13 ms 876 KB Output is correct
23 Correct 14 ms 884 KB Output is correct
24 Correct 13 ms 876 KB Output is correct
25 Correct 14 ms 876 KB Output is correct
26 Correct 13 ms 1004 KB Output is correct
27 Correct 8 ms 1388 KB Output is correct
28 Correct 9 ms 1516 KB Output is correct
29 Correct 10 ms 1516 KB Output is correct
30 Correct 27 ms 1260 KB Output is correct
31 Correct 37 ms 1260 KB Output is correct
32 Correct 28 ms 1260 KB Output is correct
33 Correct 83 ms 9308 KB Output is correct
34 Correct 83 ms 9308 KB Output is correct
35 Correct 92 ms 9052 KB Output is correct
36 Correct 332 ms 8668 KB Output is correct
37 Correct 325 ms 8796 KB Output is correct
38 Correct 315 ms 8924 KB Output is correct
39 Correct 278 ms 7260 KB Output is correct
40 Correct 275 ms 7260 KB Output is correct
41 Correct 271 ms 7260 KB Output is correct
42 Correct 197 ms 7900 KB Output is correct
43 Correct 285 ms 8796 KB Output is correct
44 Correct 269 ms 8796 KB Output is correct
45 Correct 273 ms 8796 KB Output is correct
46 Correct 269 ms 8796 KB Output is correct
47 Correct 269 ms 8796 KB Output is correct
48 Correct 273 ms 8796 KB Output is correct
49 Correct 267 ms 8796 KB Output is correct
50 Correct 277 ms 8796 KB Output is correct

Subtask #6
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 492 KB Output is correct
17 Correct 1 ms 492 KB Output is correct
18 Correct 1 ms 492 KB Output is correct
19 Correct 5 ms 876 KB Output is correct
20 Correct 4 ms 876 KB Output is correct
21 Correct 4 ms 876 KB Output is correct
22 Correct 13 ms 876 KB Output is correct
23 Correct 14 ms 884 KB Output is correct
24 Correct 13 ms 876 KB Output is correct
25 Correct 14 ms 876 KB Output is correct
26 Correct 13 ms 1004 KB Output is correct
27 Correct 288 ms 24920 KB Output is correct
28 Correct 293 ms 24792 KB Output is correct
29 Correct 289 ms 24792 KB Output is correct
30 Correct 263 ms 24792 KB Output is correct
31 Correct 594 ms 22744 KB Output is correct
32 Correct 790 ms 22744 KB Output is correct
33 Correct 624 ms 22872 KB Output is correct
34 Correct 653 ms 22744 KB Output is correct
35 Correct 1 ms 364 KB Output is correct
36 Correct 292 ms 8924 KB Output is correct
37 Correct 1056 ms 26328 KB Output is correct
38 Correct 1036 ms 26200 KB Output is correct
39 Correct 931 ms 25944 KB Output is correct
40 Correct 428 ms 13788 KB Output is correct
41 Correct 218 ms 7392 KB Output is correct
42 Correct 42 ms 2024 KB Output is correct
43 Correct 1038 ms 26328 KB Output is correct
44 Correct 854 ms 26456 KB Output is correct
45 Correct 1022 ms 25944 KB Output is correct
46 Correct 1476 ms 25304 KB Output is correct
47 Correct 529 ms 26456 KB Output is correct
48 Correct 1169 ms 25560 KB Output is correct
49 Correct 1148 ms 25688 KB Output is correct
50 Correct 457 ms 26584 KB Output is correct
51 Correct 8 ms 1388 KB Output is correct
52 Correct 9 ms 1516 KB Output is correct
53 Correct 10 ms 1516 KB Output is correct
54 Correct 27 ms 1260 KB Output is correct
55 Correct 37 ms 1260 KB Output is correct
56 Correct 28 ms 1260 KB Output is correct
57 Correct 83 ms 9308 KB Output is correct
58 Correct 83 ms 9308 KB Output is correct
59 Correct 92 ms 9052 KB Output is correct
60 Correct 332 ms 8668 KB Output is correct
61 Correct 325 ms 8796 KB Output is correct
62 Correct 315 ms 8924 KB Output is correct
63 Correct 278 ms 7260 KB Output is correct
64 Correct 275 ms 7260 KB Output is correct
65 Correct 271 ms 7260 KB Output is correct
66 Correct 197 ms 7900 KB Output is correct
67 Correct 285 ms 8796 KB Output is correct
68 Correct 269 ms 8796 KB Output is correct
69 Correct 273 ms 8796 KB Output is correct
70 Correct 269 ms 8796 KB Output is correct
71 Correct 269 ms 8796 KB Output is correct
72 Correct 273 ms 8796 KB Output is correct
73 Correct 267 ms 8796 KB Output is correct
74 Correct 277 ms 8796 KB Output is correct
75 Correct 290 ms 27352 KB Output is correct
76 Correct 327 ms 26968 KB Output is correct
77 Correct 299 ms 26968 KB Output is correct
78 Correct 265 ms 27096 KB Output is correct
79 Correct 400 ms 26840 KB Output is correct
80 Correct 278 ms 27096 KB Output is correct
81 Correct 1067 ms 26200 KB Output is correct
82 Correct 1040 ms 26072 KB Output is correct
83 Correct 1057 ms 25944 KB Output is correct
84 Correct 1025 ms 26456 KB Output is correct
85 Correct 1057 ms 25944 KB Output is correct
86 Correct 1046 ms 26220 KB Output is correct
87 Correct 998 ms 26200 KB Output is correct
88 Correct 1030 ms 21464 KB Output is correct
89 Correct 1044 ms 21464 KB Output is correct
90 Correct 1044 ms 21464 KB Output is correct
91 Correct 1061 ms 21464 KB Output is correct
92 Correct 1053 ms 21592 KB Output is correct
93 Correct 1084 ms 25048 KB Output is correct
94 Correct 1078 ms 25560 KB Output is correct
95 Correct 1088 ms 25176 KB Output is correct
96 Correct 1037 ms 25048 KB Output is correct
97 Correct 1243 ms 24920 KB Output is correct
98 Correct 797 ms 25432 KB Output is correct
99 Correct 1108 ms 25176 KB Output is correct
100 Correct 1157 ms 24920 KB Output is correct
101 Correct 874 ms 25432 KB Output is correct
102 Correct 997 ms 25048 KB Output is correct
103 Correct 1112 ms 25176 KB Output is correct
104 Correct 1093 ms 24792 KB Output is correct
105 Correct 722 ms 23128 KB Output is correct
106 Correct 889 ms 25944 KB Output is correct
107 Correct 881 ms 25944 KB Output is correct
108 Correct 886 ms 25816 KB Output is correct
109 Correct 900 ms 25816 KB Output is correct
110 Correct 885 ms 25816 KB Output is correct
111 Correct 887 ms 25944 KB Output is correct
112 Correct 880 ms 25816 KB Output is correct
113 Correct 886 ms 25856 KB Output is correct
114 Correct 899 ms 25968 KB Output is correct
115 Correct 899 ms 25908 KB Output is correct
116 Correct 842 ms 25788 KB Output is correct