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Submission #440140

# Submission time Handle Problem Language Result Execution time Memory
440140 2021-07-01T16:10:05 Z KULIKOLD Circle selection (APIO18_circle_selection) C++17
19 / 100
 1461 ms 57400 KB 
//#pragma GCC optimize ("O3")
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define endl '\n'
const int DIM = 3E5+7;
const int INF = 1E9;
struct node{
    ll x,y,r,pos;
} A[DIM];
int P[DIM],ans[DIM];
bool mc(const node &a,const node &b){
    if (a.r==b.r){
        return a.pos<b.pos;
    }
    return a.r>b.r;
}
bool can(const node &a,const node &b){
    return (a.r+b.r)*(a.r+b.r)>=(a.x-b.x)*(a.x-b.x)+(a.y-b.y)*(a.y-b.y);
}
int n;
int solve(){


    sort(A+1,A+1+n,mc);
    for(int i = 1;i<=n;++i){
        if (P[i])
            continue;
        P[i] = i;
        ans[A[i].pos] = A[i].pos;
        for(int j = i+1;j<=n;++j)
            if (!P[j] && can(A[i],A[j]))
                P[j] = i,ans[A[j].pos] = A[i].pos;
    }
    for(int i = 1;i<=n;++i)
        cout<<ans[i]<<' ';
    cout<<endl;
    return 1;
}
void solve1(){
    set<pair<ll,ll> > SL,SR;
    sort(A+1,A+1+n,mc);
    for(int i = 1;i<=n;++i){
        SL.insert({A[i].x-A[i].r,i});
        SR.insert({A[i].x+A[i].r,i});
    }

    for(int i = 1;i<=n;++i){
        if (ans[A[i].pos])
            continue;
        vector<int> V;
        {
            auto it = SL.lower_bound({A[i].x - A[i].r, 0});

            while (it != SL.end() && it->first <= A[i].x + A[i].r) {
                ans[A[it->second].pos] = A[i].pos;
                V.push_back(it->second);
                it = next(it);
            }
        }
        {
            auto it = SR.upper_bound({A[i].x+A[i].r,INF});
            if (it!=SR.begin()){
                it = prev(it);
                while(it->first>=A[i].x-A[i].r){
                    ans[A[it->second].pos] = A[i].pos;
                    V.push_back(it->second);
                    if (it==SR.begin())
                        break;
                    it = prev(it);
                }
            }
        }
        for(int i:V){
            SL.erase({A[i].x-A[i].r,i});
            SR.erase({A[i].x+A[i].r,i});
        }
    }
    for(int i = 1;i<=n;++i)
        cout<<ans[i]<<' ';
    cout<<endl;
}
int main() {

    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    cin>>n;
    for(int i = 1;i<=n;++i){
        cin>>A[i].x>>A[i].y>>A[i].r;
        A[i].pos = i;
    }
    if (n<=5000)
        solve();
    else
        solve1();
    return 0;
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 2 ms 332 KB Output is correct
17 Correct 2 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 4 ms 460 KB Output is correct
20 Correct 5 ms 460 KB Output is correct
21 Correct 4 ms 456 KB Output is correct
22 Correct 24 ms 512 KB Output is correct
23 Correct 23 ms 528 KB Output is correct
24 Correct 25 ms 516 KB Output is correct
25 Correct 24 ms 460 KB Output is correct
26 Correct 24 ms 512 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1341 ms 50760 KB Output is correct
2 Correct 1443 ms 57400 KB Output is correct
3 Correct 1400 ms 57340 KB Output is correct
4 Correct 1461 ms 57328 KB Output is correct
5 Correct 943 ms 54980 KB Output is correct
6 Correct 1002 ms 55128 KB Output is correct
7 Correct 908 ms 55116 KB Output is correct
8 Correct 908 ms 54988 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Incorrect 292 ms 16860 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 929 ms 50072 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 2 ms 332 KB Output is correct
17 Correct 2 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 4 ms 460 KB Output is correct
20 Correct 5 ms 460 KB Output is correct
21 Correct 4 ms 456 KB Output is correct
22 Correct 24 ms 512 KB Output is correct
23 Correct 23 ms 528 KB Output is correct
24 Correct 25 ms 516 KB Output is correct
25 Correct 24 ms 460 KB Output is correct
26 Correct 24 ms 512 KB Output is correct
27 Incorrect 15 ms 2124 KB Output isn't correct
28 Halted 0 ms 0 KB -

Subtask #6
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 2 ms 332 KB Output is correct
17 Correct 2 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 4 ms 460 KB Output is correct
20 Correct 5 ms 460 KB Output is correct
21 Correct 4 ms 456 KB Output is correct
22 Correct 24 ms 512 KB Output is correct
23 Correct 23 ms 528 KB Output is correct
24 Correct 25 ms 516 KB Output is correct
25 Correct 24 ms 460 KB Output is correct
26 Correct 24 ms 512 KB Output is correct
27 Correct 1341 ms 50760 KB Output is correct
28 Correct 1443 ms 57400 KB Output is correct
29 Correct 1400 ms 57340 KB Output is correct
30 Correct 1461 ms 57328 KB Output is correct
31 Correct 943 ms 54980 KB Output is correct
32 Correct 1002 ms 55128 KB Output is correct
33 Correct 908 ms 55116 KB Output is correct
34 Correct 908 ms 54988 KB Output is correct
35 Correct 1 ms 332 KB Output is correct
36 Incorrect 292 ms 16860 KB Output isn't correct
37 Halted 0 ms 0 KB -