# 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.

import math

c = 50
h = 30
val = []
items = [x for x in raw_input().split(",")]
print items
for d in items:
    val.append(str(int(round(math.sqrt(2 * c * float(d) / h)))))

print ",".join(val)
