# This is a test
# print the mean of the number given in a file
import sys

sum =0
n =0

# Sum input values
for num in open('data.txt'):
    sum +=float(num)
    n +=1

print sum/n


ddaaa3671fe7ecb50c638605e03ef3aca3646db9
# This is a test
# print the mean of the number given in a file
import sys

sum =0
n =0

# Sum input values
for num in open('data.txt'):
    sum +=float(num)
    n +=1

print sum/n

