Submission #1304823

#	Time	Username	Problem	Language	Result	Execution time	Memory
1304823		neonglitch	Balloons (CEOI11_bal)	C++20	60 / 100	2094 ms	8180 KiB

bal

#include <iostream>
#include <iomanip>
#include <cmath>
#include <vector>
using namespace std;
typedef long double ld;
typedef long double ll;
const int N=2e5+10;
ld x[N],r[N];
int main()
{
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	int n;
	cin>>n;
	ld eps=1e-10;
	vector<int> q;
	int sz=0;
	for(int i=0;i<n;i++)
	{
		cin>>x[i]>>r[i];
		// for(int&j:q)
		for(int j=1;j<=2000 and j<=sz;j++)
		{
			int k=j;
			j=q[sz-j];
			ld p=((x[i]-x[j])/sqrtl(4*r[j]));
			r[i]=min(r[i],p*p);
			j=k;
		}
		while(q.size()>0 and r[q.back()]+eps<r[i])
		{
			sz--;
			q.pop_back();
		}
		q.push_back(i);
		sz++;
		cout<<fixed<<setprecision(3)<<r[i]<<endl;
	}
}

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 10 / 10
• Subtask 6: 0 / 10
• Subtask 7: 10 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 10
• Subtask 10: 0 / 10