Submission #1362002

#	Time	Username	Problem	Language	Result	Execution time	Memory
1362002		kawhiet	Balloons (CEOI11_bal)	C++20	30 / 100	80 ms	3156 KiB

bal

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

#ifdef LOCAL
#include "debug.h"
#else
#define dbg(...) 47
#endif

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int n;
    cin >> n;
    vector<double> ans(n);
    vector<pair<double, double>> stk;
    for (int i = 0; i < n; i++) {
        double x, r;
        cin >> x >> r;
        double mx = r;
        while (!stk.empty()) {
            auto k = stk.back();
            double s = (k.first - x) * (k.first - x) / (4 * k.second);
            mx = min(mx, s);
            if (mx >= k.second) {
                stk.pop_back();
            } else {
                break;
            }
        }
        stk.push_back({x, mx});
        cout << mx << '\n';
    }
    return 0;
}

• Subtask 1: 10 / 10
• Subtask 2: 0 / 10
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 0 / 10
• Subtask 6: 0 / 10
• Subtask 7: 0 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 10
• Subtask 10: 0 / 10