##-
# Author: Brian Tiffin
# Dedicated to the public domain
#
# Date: September 2016
# Modified: 2018-06-18/18:03-0400 btiffin
#
# Tectonics: python tightloop-py.py
##+
# Sum of values from 0 to 16777216
total = 0
n = 2**24
for i in range(n, 1, -1):
    total += i
print(total)