#! /usr/bin/env python3.4
#
#########################
#      $Author$
#      $Date$
#      $HeadURL$
#      $Revision$
#
#########################

import glob
import string
import re
import copy
import math
from pprint import pprint as pp

l1 = input('Please enter some values: ')

l1 = l1.split()

sum = 0.0
for item in l1:
    try:
        sum += float(item)
    except:
        sum = sum

print("The sum is: ",end="")
print(sum)



#if __name__ == '__main__':





















































































































































