Submission #573363

#	Time	Username	Problem	Language	Result	Execution time	Memory
573363		codebuster_10	Balloons (CEOI11_bal)	C++17	100 / 100	274 ms	5404 KiB

bal

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