import sys
from decimal import Decimal, getcontext

def main():
    getcontext().prec = 40  # Set the precision to a high enough value

    n = int(sys.stdin.readline())
    sum_sqrt = Decimal(0)
    results = []

    for _ in range(n):
        x = int(sys.stdin.readline())
        sqrt_x = Decimal(x).sqrt()
        sum_sqrt += sqrt_x
        results.append(sum_sqrt)

    # Formatting each result to 16 decimal places
    for s in results:
        # Convert to string, split into integer and decimal parts
        s_str = format(s, 'f')
        if '.' in s_str:
            integer_part, decimal_part = s_str.split('.')
            decimal_part = (decimal_part + '0' * 16)[:16]  # Pad with zeros if needed, take first 16 digits
        else:
            integer_part, decimal_part = s_str, '0' * 16
        # Ensure that the output has exactly 16 decimal places
        formatted = f"{integer_part}.{decimal_part}"
        print(formatted)

if __name__ == "__main__":
    main()