# Write a program that calculates and prints the value according to the given formula:
# Q = Square root of [(2 * C * D)/H]
# Following are the fixed values of C and H:
# C is 50. H is 30.
# D is the variable whose values should be input to your program in a comma-separated sequence.
# Example
# Let us assume the following comma separated input sequence is given to the program:
# 100,150,180
# The output of the program should be:
# 18,22,24

def givenFormula(D):
    import math
    C = 50
    H = 30
    Q = math.sqrt((2 * C * D) / H)
    return Q


_RAW_INPUT = input("Input comma separated sequence of numbers: ")
_INPUT_SEQ = [int(i) for i in (_RAW_INPUT.split(","))]

# print(_RAW_INPUT)
# print(_INPUT_SEQ)

_RESULT_SEQ = []

for i in _INPUT_SEQ:
    _RESULT_SEQ.append(round(givenFormula(i)))

print(",".join([str(i) for i in _RESULT_SEQ]))