Char Sum - HackerEarth Solution

c = input()
answer = 0
z = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
     'x', 'y', 'z']
for i in range(len(c)):
    for j in range(len(z)):
        if c[i] == z[j]:
            answer += j+1
        else:
            continue
print(answer)