oj.uz

Submission #1073860

# Submission time Handle Problem Language Result Execution time Memory
1073860 2024-08-25T00:26:19 Z ngrace Circle selection (APIO18_circle_selection) C++14
19 / 100
 889 ms 64216 KB 
#include <bits/stdc++.h>
using namespace std;
#define v vector
#define ll long long
#define ii pair<ll,ll>
#define fi first
#define se second

struct Circle{
    ll x, y, r, i;
};

int N;
v<Circle> C;

bool compC(Circle& a, Circle& b){
    if(a.r==b.r) return a.i<b.i;
    return a.r>b.r;
}
bool isect(Circle& a, Circle& b){
    ll dx=a.x-b.x;
    ll dy=a.y-b.y;
    ll r=a.r+b.r;
    return dx*dx+dy*dy <= r*r;
}

v<ll> eBy;

void sub1(){
    for(int i=0; i<N; i++){
        if(eBy[C[i].i]!=-1) continue;
        eBy[C[i].i] = C[i].i;
        for(int j=i+1; j<N; j++){
            if(eBy[C[j].i]==-1 && isect(C[i], C[j])){
                eBy[C[j].i] = C[i].i;
            }
        }
    }
}

void sub2(){
    set<ii> pts;
    for(int i=0; i<N; i++){
        pts.insert(make_pair(C[i].x-C[i].r, i));
        pts.insert(make_pair(C[i].x+C[i].r, i));
    }

    for(int i=0; i<N; i++){
        if(eBy[C[i].i]!=-1) continue;
        v<int> del;
        auto it = pts.lower_bound(make_pair(C[i].x-C[i].r, -1));
        while(it!=pts.end() && (*it).fi<=C[i].x+C[i].r){
            del.push_back((*it).se);
            it++;
        }
        for(int ind:del){
            eBy[C[ind].i] = C[i].i;
            pts.erase(make_pair(C[ind].x-C[ind].r, ind));
            pts.erase(make_pair(C[ind].x+C[ind].r, ind));
        }
    }
}

void sub3(){

}

void sub4(){

}

void full(){

}

int main(){
    cin>>N;
    bool s2 = true;
    bool s4 = true;
    for(int i=0; i<N; i++){
        ll x,y,r;
        cin>>x>>y>>r;
        C.push_back({x,y,r,i});
        s2 = s2 && y==0;
        s4 = s4 && r==C[0].r;
    }
    sort(C.begin(), C.end(), compC);

    eBy = v<ll>(N,-1);

    if(N<=5000) sub1();
    else if(s2) sub2();
    else if(s4) sub4();
    else sub3();

    for(int i:eBy) cout<<i+1<<" ";
    cout<<endl;
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 5 ms 664 KB Output is correct
20 Correct 5 ms 728 KB Output is correct
21 Correct 6 ms 704 KB Output is correct
22 Correct 24 ms 728 KB Output is correct
23 Correct 24 ms 724 KB Output is correct
24 Correct 25 ms 720 KB Output is correct
25 Correct 24 ms 732 KB Output is correct
26 Correct 29 ms 724 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 889 ms 55620 KB Output is correct
2 Correct 790 ms 61988 KB Output is correct
3 Correct 824 ms 62880 KB Output is correct
4 Correct 772 ms 64216 KB Output is correct
5 Correct 666 ms 56924 KB Output is correct
6 Correct 618 ms 58268 KB Output is correct
7 Correct 662 ms 56480 KB Output is correct
8 Correct 649 ms 56652 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Incorrect 93 ms 6332 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 246 ms 16760 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 5 ms 664 KB Output is correct
20 Correct 5 ms 728 KB Output is correct
21 Correct 6 ms 704 KB Output is correct
22 Correct 24 ms 728 KB Output is correct
23 Correct 24 ms 724 KB Output is correct
24 Correct 25 ms 720 KB Output is correct
25 Correct 24 ms 732 KB Output is correct
26 Correct 29 ms 724 KB Output is correct
27 Incorrect 11 ms 980 KB Output isn't correct
28 Halted 0 ms 0 KB -

Subtask #6
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 5 ms 664 KB Output is correct
20 Correct 5 ms 728 KB Output is correct
21 Correct 6 ms 704 KB Output is correct
22 Correct 24 ms 728 KB Output is correct
23 Correct 24 ms 724 KB Output is correct
24 Correct 25 ms 720 KB Output is correct
25 Correct 24 ms 732 KB Output is correct
26 Correct 29 ms 724 KB Output is correct
27 Correct 889 ms 55620 KB Output is correct
28 Correct 790 ms 61988 KB Output is correct
29 Correct 824 ms 62880 KB Output is correct
30 Correct 772 ms 64216 KB Output is correct
31 Correct 666 ms 56924 KB Output is correct
32 Correct 618 ms 58268 KB Output is correct
33 Correct 662 ms 56480 KB Output is correct
34 Correct 649 ms 56652 KB Output is correct
35 Correct 0 ms 344 KB Output is correct
36 Incorrect 93 ms 6332 KB Output isn't correct
37 Halted 0 ms 0 KB -