Submission #998898

#	Time	Username	Problem	Language	Result	Execution time	Memory
998898		hippo123	Balloons (CEOI11_bal)	C++17	100 / 100	396 ms	11860 KiB

bal

#include <bits/stdc++.h>
using namespace std;
 
#define pr pair<double, int>
#define ll long long
#define pb push_back
#define f first
#define s second
 
 
int main(){
	int n; cin>>n;
	vector<double> x(n), r(n);
	for (int i=0;i<n; i++) cin>>x[i]>>r[i];
	
	stack<pr> st;
	double ans[n];
	for (int i=0; i<n; i++){
		double br=r[i]; 	
		while(!st.empty() ){
			br=min(br, (x[i]-st.top().s)*(x[i]-st.top().s)/(4*st.top().f));	
			if(br>st.top().f){
				st.pop();
			}
			else{
				break;
			}	
		}
		st.push({br, x[i]});		
		ans[i]=br; 
	}
	cout << fixed << setprecision(3);
	for (int i=0; i<n; i++) cout<<ans[i]<<endl;
}

• 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