Submission #1295810

#	Time	Username	Problem	Language	Result	Execution time	Memory
1295810		KindaGoodGames	Balloons (CEOI11_bal)	C++20	30 / 100	175 ms	9056 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/(4L*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];
    }


    vector<pii> S;
    vector<double> ans;
    for(int i = 0; i < n; i++){
        double val = 1e9; 

        val = min(val, constr[i]);
        while(S.size() && get(S.back(),arr[i]) > S.back().second){
            val = min(val, get(S.back(),arr[i]));
            S.pop_back();
        }
        if(S.size())val = min(val, get(S.back(),arr[i]));
        S.push_back({arr[i],val});
        ans.push_back(val);
    }
    cout << fixed << setprecision(3);
    for(auto v : ans) cout << v << "\n";
}

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