Submission #847886

#	Time	Username	Problem	Language	Result	Execution time	Memory
847886		gtm7	Balloons (CEOI11_bal)	C++17	100 / 100	165 ms	14928 KiB

bal

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

int main()
{
    cout << fixed << setprecision(3);
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int n;
    cin >> n;
    vector<pair<long double, long double>> a(n);
    for (int i = 0; i < n; i++)
    {
        cin >> a[i].first >> a[i].second;
    }
    stack<pair<long double, long double>> s;
    long double d;
    vector<long double> ans(n);
    for (int i = 0; i < n; i++)
    {
        d = a[i].second;
        while (1)
        {
            if (s.empty())
            {
                s.push({a[i].first, d});
                ans[i] = d;
                break;
            }
            d = min(d, (s.top().first - a[i].first) * (s.top().first - a[i].first) / (4 * s.top().second));
            if (d < s.top().second)
            {
                s.push({a[i].first, d});
                ans[i] = d;
                break;
            }
            else
            {
                s.pop();
            }
        }
    }
    for (int i = 0; i < n; i++)
    {
        cout << ans[i] << "\n";
    }
    return 0;
}

• 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