string-sum.py

"""
Consider All lowercase Alphabets of the English language. Here we consider each alphabet from 
a to z to have a certain weight. The weight of the alphabet a is considered to be 1, b to be 2, 
c to be 3 and so on until z has a weight of 26. In short, the weight of the alphabet a is 1, and 
the weight of all other alphabets is the weight of its previous alphabet + 1.

Now, you have been given a String S consisting of lowercase English characters. You need to 
find the summation of weight of each character in this String.

For example, Consider the String aba
Here, the first character a has a weight of 1, the second character b has 2 and the third 
character a again has a weight of 1. So the summation here is equal to : 1+2+1=4

Input Format:
The first and only line of input contains the String S.

Output Format 
Print the required answer on a single line

SAMPLE INPUT 
aba
SAMPLE OUTPUT 
4
"""
string = input()
summ = 0
for i in string:
    summ += (ord(i) - 96)
print(summ)