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;
const int maxn = 2e5+10;
double x[maxn], r[maxn];
vector<int> st;
int n;
void FindR(int ind)
{
int i = st.back();
double tmpr = (x[ind] - x[i]) / (double(4) * r[i]);
tmpr *= (x[ind] - x[i]);
//cout << ind << " , " << i << " , " << tmpr << endl;
r[ind] = min(r[ind], tmpr);
}
int main()
{
cin >> n;
for(int i = 0; i < n; i++)
{
cin >> x[i] >> r[i];
}
for(int i = 0; i < n; i++)
{
while(!st.empty())
{
FindR(i);
if(r[i] >= r[st.back()])
{
st.pop_back();
}
else
break;
}
st.push_back(i);
}
for(int i = 0; i < n; i++)
{
cout.precision(3);
cout << fixed << r[i] << '\n';
}
}
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