Submission #584573

#	Time	Username	Problem	Language	Result	Execution time	Memory
584573		israeladewuyi	Balloons (CEOI11_bal)	C++17	100 / 100	623 ms	6852 KiB

bal

#include <bits/stdc++.h>
using namespace std;
 
typedef long long ll;
#define int ll
#define endl "\n"

int N;

int32_t main(){
	cin>>N;
	stack<pair<long double, long double>>St;

	for(int i = 0; i < N; i++){
		long double pos, radius; cin>>pos>>radius;
		if(i == 0){
			cout<<fixed<<setprecision(10)<<radius<<endl;
			St.push({pos, radius});
		}
		else{
			while(!St.empty()){
				auto cur = St.top();
				long double pp = cur.first;
				long double radd = cur.second;
				radius = min((long double)radius, (long double)((pos - pp) * (pos - pp)) / (long double)(4 * radd));
				if(radius >= radd){
					St.pop();
				}
				else break;
			}
			St.push({pos, radius});
			cout<<fixed<<setprecision(10)<<radius<<endl;
		}
	}
	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