Submission #717824

#	Time	Username	Problem	Language	Result	Execution time	Memory
717824		adrilen	Balloons (CEOI11_bal)	C++17	100 / 100	275 ms	5880 KiB

bal

#include<bits/stdc++.h>
using namespace std;
using ll = long long; 
using ld = long double;
typedef pair<ld, ld> pii;

ld dist(ld dx, ld r)
{
    return dx * dx / (4 * r);
}


int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    
    int n;
    cin >> n;

    cout << fixed << setprecision(5);
    
    stack<pii> s;

    ld x, r, l;
    while (n--)
    {
        cin >> x >> r;
        while (s.size()) {

            l = dist(s.top().first - x, s.top().second);

            l = min(l, r);

            if (l >= s.top().second) {
                s.pop();
                r = min(r, l);
            } else {
                r = l;
                break;
            }
        }
        s.push(pii(x, r));
        cout << r << "\n";
    }
}

• 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