Submission #1236452

#	Time	Username	Problem	Language	Result	Execution time	Memory
1236452		kevinle0801	Balloons (CEOI11_bal)	C++20	100 / 100	120 ms	1996 KiB

bal

#include <bits/stdc++.h>
#define int long long
#define endl "\n"
#define name "TEST"
using namespace std;

signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0); cout.tie(0);
//    freopen(name".INP", "r", stdin);
//    freopen(name".OUT", "w", stdout);

    int n; cin >> n;
    stack<pair<double, double>> st;

    for (int i = 1; i <= n; i++){
        double x, r;
        cin >> x >> r;
        while (!st.empty()){
            pair<double, double> fr = st.top();
            double dis = x - fr.first;
            r = min(r, dis * dis / (fr.second * 4));
            if (fr.second <= r) st.pop();
            else break;
        }
        st.push({x, r});
        cout << setprecision(3) << fixed << r << endl;
    }

    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