#include <bits/stdc++.h>
// #pragma GCC target ("avx,avx2,fma")
// #pragma GCC optimize ("Ofast")
// #pragma GCC optimize ("unroll-loops")
#define int long long
#define ld long double
#define all(a) (a).begin(), (a).end()
#define f first
#define s second
using namespace std;
ld dist(pair<ld, ld> a, pair<ld, ld> b)
{
return (abs(a.f - b.f) * abs(a.f - b.f) + abs(a.s - b.s) * abs(a.s - b.s));
}
bool touch(pair<ld, ld> a, pair<ld, ld> b)
{
ld d = dist(a, b);
// cout << d << ' ' << a.s + b.s << endl;
return d <= (a.s + b.s) * (a.s + b.s);
}
void solve(int tc)
{
int n;
cin >> n;
vector<pair<ld, ld>> points(n);
for (int i = 0; i < n; i++)
cin >> points[i].f >> points[i].s;
sort(all(points));
vector<pair<ld, ld>> st;
for (int i = 0; i < n; i++)
{
ld rad = INT_MAX;
while (st.size())
{
pair<ld, ld> cur = st.back();
ld eps = 1e-11;
ld l = eps, r = points[i].s;
ld best = eps;
while (l + eps <= r)
{
ld mid = (l + r) / 2;
if (!touch(cur, {points[i].f, mid}))
{
l = mid + eps;
best = mid;
}
else r = mid - eps;
}
rad = min(best, rad);
if (best > cur.s)
{
st.pop_back();
}
else
{
break;
}
}
rad = min(rad, points[i].s);
cout << setprecision(11) << fixed << rad << '\n';
st.push_back({points[i].f, rad});
}
}
signed main()
{
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
int t = 1;
for (int i = 1; i <= t; i++)
{
solve(i);
}
}
