#include <bits/stdc++.h>
#define INF 1000000000000000007
#define rep(i, N) for(ll i = 0; i < N; i++)
#define rep2(i, j, k) for(ll i = j; i < k; i++)
#define chmax(x, y) x = max(x, y)
#define chmin(x, y) x = min(x, y)
#define print(x) cout << x << "\n"
#define print2(x, y) cout << x << " " << y << "\n"
#define printv(vec){for(auto p: vec) cout << p << " "; cout << "\n";} 
#define SUM(v) accumulate(v.begin(), v.end(), 0LL)
#define MAX(v) *max_element(v.begin(), v.end())
#define MIN(v) *min_element(v.begin(), v.end())
#define SORT(v) sort(v.begin(), v.end())
#define REV(v) reverse(v.begin(), v.end())
#pragma GCC target("avx")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
typedef long long ll;
using namespace std;
using vl = vector<ll>;
using vvl = vector<vector<ll>>;

// #include <atcoder/all>
// using namespace atcoder;
// ll mod = 1000000007;
// using mint = modint1000000007;
// using mint = modint998244353;
// ll mod = 998244353;

void Main(){
	
	int n;
	scanf("%d", &n);
	long double ans = 0.0;
	
	rep(i, n){
		ll x;
		scanf("%ld", &x);
		ans += sqrt(x);
		cout << fixed << setprecision(18) << ans << endl;
	}
	
}

int main(){
	
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	ll t = 1;
	// cin >> t;
	rep(i, t) Main();
	return 0;
	
}