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;
stack<pair<double, double>> st;
int main(){
int n;
cin >> n;
for(int i = 0; i < n; i++){
double x, r;
cin >> x >> r;
while(!st.empty()){
auto [x1, r1] = st.top();
r = min(r, (x - x1) * (x - x1) / (4 * r1));
if(r >= r1) st.pop();
else break;
}
st.push({x, r});
cout << fixed << setprecision(3) << r << endl;
}
return 0;
}
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