Submission #671244

#	Time	Username	Problem	Language	Result	Execution time	Memory
671244		adaawf	Balloons (CEOI11_bal)	C++14	100 / 100	540 ms	7044 KiB

bal

#include <iostream>
#include <stack>
#include <iomanip>
using namespace std;
double res[1000005];
int main() {
    int n;
    cin >> n;
    stack<pair<double, double>> s;
    for (int i = 0; i < n; i++){
        double x, r, mi;
        cin >> x >> r;
        mi = r;
        while (!s.empty()) {
            pair<double, double> p = s.top();
            mi = min(mi, (p.first - x) * (p.first - x) / (p.second * 4));
            if (mi >= p.second) {
                s.pop();
            }
            else break;
        }
        s.push(make_pair(x, mi));
        res[i] = mi;
    }
    cout << fixed << setprecision(3);
    for (int i = 0; i < n; i++) {
        cout << res[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