from math import sqrt
from decimal import Decimal
import sys
input = sys.stdin.readline

def main():
    N = int(input())
    ans = [0]*(N+1)
    ans[0] = Decimal(0)
    for i in range(1,N+1):
        ans[i] = ans[i-1]+Decimal(int(input())).sqrt()
    print(*ans[1:],sep="\n")

if __name__ == "__main__":
    main()