This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef unsigned long long int ull;
typedef long int li;
typedef vector<int> vi;
typedef pair<int, int> pi;
#define f first
#define s second
#define pb push_back
#define mp make_pair
#define modint int(1e9 + 7)
#define mod 1e9 + 7
#define Inf INFINITY
// =============================Graph Agorithms==================================
// vector<bool> visited;
// void dfs(int v)
// {
// visited[v] = true;
// for (int u : adj[v])
// {
// if (!visited[u])
// dfs(u);
// }
// }
// vector<vector<int>> adj; // adjacency list representation
// int n; // number of nodes
// int s; // source vertex
// queue<int> q;
// vector<bool> used(n);
// vector<int> d(n), p(n);
// q.push(s);
// used[s] = true;
// p[s] = -1;
// while (!q.empty())
// {
// int v = q.front();
// q.pop();
// for (int u : adj[v])
// {
// if (!used[u])
// {
// used[u] = true;
// q.push(u);
// d[u] = d[v] + 1;
// p[u] = v;
// }
// }
// }
#define loop(n) for (int i = 0; i < n; i++)
#define rep(i, a, n) for (int i = a; i < n; i++)
#define file_read \
freopen("input.txt", "r", stdin); \
freopen("output.txt", "w", stdout);
#define tc \
int t; \
cin >> t; \
while (t--)
#define endl "\n"
#define iamspeed \
ios::sync_with_stdio(false); \
cin.tie(0); \
cout.tie(0);
int main(void)
{
iamspeed;
int n;
cin >> n;
vector<pi> a(n);
for(int i=0;i<n;i++)
{
cin >> a[i].f >> a[i].s;
}
vector<double> radius(n);
stack<int> s;
for(int i=0;i<n;i++)
{
double sz = a[i].s;
while(!s.empty())
{
int top = s.top();
sz = min(sz, pow(a[top].f - a[i].f,2)/(radius[top] * 4));
if(sz >= radius[top])
{
s.pop();
}
else
{
break;
}
}
s.push(i);
radius[i] = sz;
}
for(int i=0;i<n;i++)
{
cout << fixed << setprecision(3);
cout << radius[i] << endl;
}
return 0;
}
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