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;
using ll = long long;
using ld = long double;
typedef pair<ld, ld> pii;
ld dist(ld dx, ld r)
{
return dx * dx / (4 * r);
}
int main() {
ios_base::sync_with_stdio(false);
cin.tie(NULL);
int n;
cin >> n;
cout << fixed << setprecision(6);
vector<pii> s;
ld x, r;
while (n--)
{
cin >> x >> r;
for (const pii &p : s)
{
r = min(r, dist(x - p.first, p.second));
}
s.emplace_back(pii(x, r));
cout << r << "\n";
}
}
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