Submission #1016364

#	Time	Username	Problem	Language	Result	Execution time	Memory
1016364		cryptobunny	Balloons (CEOI11_bal)	C++14	100 / 100	446 ms	12112 KiB

bal

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

int main() {
    int n;
    cin >> n;
    vector<long double> r(n), x(n);
    cout << fixed << setprecision(3);
    for (int i = 0; i < n; i++) cin >> x[i] >> r[i];
    stack<int> s;
    for (int i = 0; i < n; i++) {
        if (s.empty()) {
            s.push(i);
            cout << r[i] << endl;
        } else {
            while (!s.empty()) {
                long double lim = (x[i] - x[s.top()]) * (x[i] - x[s.top()]) / 4 / r[s.top()];
                r[i] = min(lim, r[i]);
                if (r[s.top()] < r[i]) {
                    s.pop();
                    continue;
                }
                break;
            }
            cout << r[i] << endl;
            s.push(i);
        }
    }
}

• 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