제출 #1295803

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1295803		KindaGoodGames	Balloons (CEOI11_bal)	C++20	0 / 100	109 ms	4328 KiB

bal

#include<bits/stdc++.h>

#define ll long long
#define double long double
#define pii pair<double,double>
#define pdd pair<double,double>
#define tiii tuple<int,int,int>

using namespace std;

double eps = 1e-6;

double dist(pdd a, pdd b){
    double dx = a.first-b.first;
    double dy = a.second-b.second;
    return sqrt((dx*dx)+(dy*dy));
}



double get(pii bal, int p){ 

    double top = (bal.first-p)*(bal.first-p);
    return (top/(4*bal.second));
}
int main(){
    int n;
    cin >> n;

    vector<int> arr(n);
    vector<double> constr(n);

    for(int i = 0; i < n; i++){
        cin >> arr[i] >> constr[i];
    }

    cout << fixed << setprecision(3);

    vector<pii> S;
    for(int i = 0; i < n; i++){
        double val = 1e9;
         
        // for(auto v : S){
        //     val = min(val, get(v, arr[i]));
        // } 
        while(S.size() && S.back().second <= val){
            S.pop_back();
        }
        val = min(val, constr[i]);
        val = min(val, get(S.back(),arr[i]));
        S.push_back({arr[i],val});
        cout << val << "\n";
    }
    
}

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