Submission #1288714

#	Time	Username	Problem	Language	Result	Execution time	Memory
1288714		torment	Balloons (CEOI11_bal)	C++20	60 / 100	2096 ms	8468 KiB

bal

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

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n;
    cin >> n;
    vector<long double>x(n), r(n);
    for(int i = 0;i < n;++i){
        cin >> x[i] >> r[i];
    }
    vector<array<long double, 2>>st;
    for(int i = 0;i < n;++i){
        long double mn = r[i];
        for(auto t : st){
            mn = min(mn, (t[0] - x[i]) * (t[0] - x[i]) / (4 * t[1]));
        }
        while(!st.empty() && st.back()[1] < mn){
            st.pop_back();
        }
        st.push_back({x[i], mn});
        cout << fixed << setprecision(3) << mn << '\n';
        r[i] = mn;
    }
}

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