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;
using i64 = long long;
using d64 = long double;
i64 sq(int a) {
return a * a;
}
d64 calc(int ax, int bx, d64 ar) {
return d64(sq(bx - ax)) / (4 * ar);
}
#define ONLINE_JUDGE
void solve() {
int n;
cin >> n;
vector <int> x(n +1);
vector <d64> r(n +1);
for(int i = 1; i <= n; i++) {
cin >> x[i] >> r[i];
}
cout.precision(9);
for(int i = 1; i <= n; i++) {
for(int j = i -1; j >= 1; j--) {
r[i] = min(r[i], calc(x[i], x[j], r[j]));
}
cout << r[i] << "\n";
}
return;
}
signed main() {
#ifndef ONLINE_JUDGE
freopen("in.txt", "r", stdin);
freopen("out.txt", "w", stdout);
#endif
ios_base::sync_with_stdio(false);
cin.tie(NULL); cout.tie(NULL);
int t = 1; //cin >> t;
for(int i = 1; i <= t; i++) {
solve();
}
return 0;
}
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