이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include <bits/stdc++.h>
using namespace std;
int main(){
int n;
cin>>n;
stack<pair<double, double>> s;
for(int i=1;i<=n;++i){
double x, r;
cin>>x>>r;
while(!s.empty()){
double x1, r1;
tie(x1, r1)=s.top();
double val=((x1-x)*(x1-x))/(4*r1);
r=min(r, val);
if(r>=r1) s.pop();
else break;
}
s.push({x, r});
cout<<fixed<<setprecision(9)<<r<<"\n";
}
return 0;
}
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