Submission #1215241

#	Time	Username	Problem	Language	Result	Execution time	Memory
1215241		timeflew	Balloons (CEOI11_bal)	C++20	100 / 100	120 ms	2060 KiB

bal

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

#define ll long long
#define ff first
#define ss second
#define all(x) x.begin(), x.end()

int main() {
    ios::sync_with_stdio(0); cin.tie(0);
    int n; cin>>n;
    vector<pair<double, double>> stk;
    for(int i=0; i<n; i++) {
        double x, r; cin>>x>>r;
        while(stk.size()) {
            r=min(r, (x-stk.back().ff)*(x-stk.back().ff)/(stk.back().ss*4));
            if(r>=stk.back().ss) stk.pop_back();
            else break;
        }
        stk.push_back({x, r});
        cout<<fixed<<setprecision(3)<<r<<"\n";
    }
    return 0;
}
//rating below 2400 must be solved orzorzorz

• 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