Submission #469306

#	Time	Username	Problem	Language	Result	Execution time	Memory
469306		Autron	Balloons (CEOI11_bal)	C++14	100 / 100	777 ms	6604 KiB

bal

#include <bits/stdc++.h>
using namespace std;

int main(){
	int n;
	cin>>n;
	stack<pair<double, double>> s;
	for(int i=1;i<=n;++i){
		double x, r;
		cin>>x>>r;
		while(!s.empty()){
			double x1, r1;
			tie(x1, r1)=s.top();
			double val=((x1-x)*(x1-x))/(4*r1);
			r=min(r, val);
			if(r>=r1) s.pop();
			else break;
		}
		s.push({x, r});
		cout<<fixed<<setprecision(9)<<r<<"\n";
	}
	return 0;
}

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