Submission #931612

#	Time	Username	Problem	Language	Result	Execution time	Memory
931612		12345678	Circle selection (APIO18_circle_selection)	C++17	7 / 100	102 ms	1116 KiB

circle_selection

#include <bits/stdc++.h>

using namespace std;

#define ll long long

const int nx=5e3+5;

ll n, x[nx], y[nx], r[nx], used[nx], res[nx];

int main()
{
    cin.tie(NULL)->sync_with_stdio(false);
    cin>>n;
    for (int i=1; i<=n; i++) cin>>x[i]>>y[i]>>r[i];
    for (int i=1; i<=n; i++)
    {
        pair<ll, ll> p={0, 0};
        for (int j=1; j<=n; j++) if (!used[j]) p=max(p, {r[j], -j});
        if (p.first==0) continue;
        for (int j=1; j<=n; j++) if (!used[j]&&((x[-p.second]-x[j])*(x[-p.second]-x[j])+(y[-p.second]-y[j])*(y[-p.second]-y[j])<=(r[-p.second]+r[j])*(r[-p.second]+r[j]))) used[j]=1, res[j]=-p.second;
    }
    for (int i=1; i<=n; i++) cout<<res[i]<<' ';
}

• Subtask 1: 7 / 7
• Subtask 2: 0 / 12
• Subtask 3: 0 / 15
• Subtask 4: 0 / 23
• Subtask 5: 0 / 30
• Subtask 6: 0 / 13