Submission #888617

#	Time	Username	Problem	Language	Result	Execution time	Memory
888617		a5a7	Balloons (CEOI11_bal)	C++14	100 / 100	217 ms	8800 KiB

bal

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

int main(){
    int n;
    cin >> n;
    pair<double, double> v[n];
    for (int i = 0; i < n; i++) cin >> v[i].first >> v[i].second;
    stack<pair<double, double>> s;
    for (int i = 0; i < n; i++){
        double radius = v[i].second;
        double x2 = v[i].first;
        while (!s.empty()){
            double x1 = s.top().first, r1 = s.top().second;
            double r2 = (x1-x2)*(x1-x2)/(4*r1);
            radius = min(r2, radius);
            if (radius >= r1){
                s.pop();
            }else{
                break;
            }
        }
        printf("%.4f\n", radius);
        s.push(make_pair(x2, radius));
    }
}

• 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