import sys
from decimal import Decimal, getcontext

getcontext().prec = 35

def main():
    n = int(sys.stdin.readline())
    xs = [int(sys.stdin.readline()) for _ in range(n)]
    
    sums = []
    current = Decimal(0)
    for x in xs:
        current += Decimal(x).sqrt()
        sums.append(current)
    
    for s in sums:
        # Convert to string with enough precision
        s_str = format(s, 'f')  # Convert to fixed-point string
        # Split into integer and fractional parts
        if '.' in s_str:
            integer_part, fractional_part = s_str.split('.')
        else:
            integer_part = s_str
            fractional_part = ''
        # Ensure fractional part has at least 18 digits
        fractional_part = fractional_part.ljust(18, '0')[:18]
        # Combine and remove trailing zeros and unnecessary decimal point
        result = f"{integer_part}.{fractional_part}"
        result = result.rstrip('0').rstrip('.') if '.' in result else result
        print(result)

if __name__ == "__main__":
    main()