Submission #590970

#	Time	Username	Problem	Language	Result	Execution time	Memory
590970		Charizard2021	Balloons (CEOI11_bal)	C++17	100 / 100	604 ms	5636 KiB

bal

#include <bits/stdc++.h>
using namespace std;
using ld = long double;
typedef pair<ld,ld> pll;
ld raio(ld d,ld r2){
    return (d*d)/(4*r2);
}
int main(){
    int N;
    cin >> N;
    stack<pll> stack;
    for(int _ = 0;_ < N;++_){
        ld x,r;
        cin >> x >> r;
        while(stack.size()){
            ld l = raio(stack.top().first-x,stack.top().second);
            l = min(l,r);
            if(l >= stack.top().second){
                stack.pop();
                r = min(l,r);
            }else {
                r = l;
                break;
            }
        }
        stack.push({x,r});
        cout << fixed << setprecision(3)<<r<<"\n";
    }
}

• 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