Submission #1123497

#	Time	Username	Problem	Language	Result	Execution time	Memory
1123497		lsdwpqer	Balloons (CEOI11_bal)	C++20	100 / 100	437 ms	6508 KiB

bal

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

int main(){
ll n;
cin >> n;
double a[n][2];
for(int i = 0;i < n;i++){
    cin >> a[i][0];
    cin >> a[i][1];
}
stack<array<double,2>> x;
double res[n];
res[0] = a[0][1];
x.push({a[0][0],a[0][1]});
for(int i = 1;i < n;i++){
    array<double,2> p;
    double b = a[i][1];
    while(!x.empty()){
        p = x.top();
        b = min(b,((a[i][0]-p[0])*(a[i][0]-p[0]))/(4*p[1]));
        if(p[1] > b){
            break;
        }
        x.pop();
    }
    res[i] = b;
    x.push({a[i][0],b});
}
for(int i = 0;i < n;i++){
    cout << fixed << setprecision(3);
    cout << res[i] << endl;
}
}

• 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