Submission #978703

#	Time	Username	Problem	Language	Result	Execution time	Memory
978703		De3b0o	Circle selection (APIO18_circle_selection)	C++14	7 / 100	37 ms	1776 KiB

circle_selection

#include<bits/stdc++.h>
#define ll long long
#define F first
#define S second
#define in insert
#define pb push_back
#define ppb pop_back()
#define d3 ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define cans cout << ans << "\n";
#define yes cout << "Yes" << "\n";
#define no cout << "No" << "\n";
#define pll pair<ll,ll>
#define lin cout << "\n";
#define sqr 340
#define mod 1000000007
#define mid ((l+r)/2)
#define lc (2*n)
#define rc (2*n+1)

using namespace std;

ll fp(ll x , ll y)
{
    if(y==0)
        return 1;
    ll z = fp(x,y/2);
    if(y&1)
        return z*z*x;
    else
        return z*z;
}

int sqrot(ll x)
{
    int l = 0 , r = INT_MAX;
    while(l<=r)
    {
        if(mid*mid>=x)
            r=mid-1;
        else
            l=mid+1;
    }
    return r+1;
}

ll cel(ll x , ll y)
{
    return x/y + bool(x%y);
}

string tb(ll x)
{
    string s = "";
    while(x>0)
    {
        if(x&1)
            s+='1';
        else
            s+='0';
        x/=2;
    }
    while(s.size()<60)
        s+='0';
    return s;
}

ll fb(string s)
{
    ll x = 0;
    ll c = 1;
    for(int8_t i = 0 ; 60>i ; i++)
    {
        if(s[i]=='1')
            x+=c;
        c*=2;
    }
    return x;
}

ll x[5009] , y[5009] , r[5009] , ans[5009];

int main()
{
    ll n;
    cin >> n;
    set<pll> s;
    for(int i = 0 ; n>i ; i++)
    {
        cin >> x[i] >> y[i] >> r[i];
        s.in({r[i],-i});
    }
    while(!s.empty())
    {
        auto it = s.end();
        it--;
        ll c = -it->S;
        for(int i = 0 ; n>i ; i++)
        {
            ll d1 = (x[i]-x[c])*(x[i]-x[c]) + (y[i]-y[c])*(y[i]-y[c]);
            ll d2 = (r[i]+r[c])*(r[i]+r[c]);
            if(d1<=d2)
            {
                it = s.find({r[i],-i});
                if(it==s.end())
                    continue;
                ans[i]=c+1;
                s.erase(it);
            }
        }
    }
    for(int i = 0 ; n>i ; i++)
        cout << ans[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