import re

pat = re.compile('(?=([0-9]|one|two|three|four|five|six|seven|eight|nine))')

def conv(s):
    if s in ('0'):
        return 0
    elif s in ('1', 'one'):
        return 1
    elif s in ('2', 'two'):
        return 2
    elif s in ('3', 'three'):
        return 3
    elif s in ('4', 'four'):
        return 4
    elif s in ('5', 'five'):
        return 5
    elif s in ('6', 'six'):
        return 6
    elif s in ('7', 'seven'):
        return 7
    elif s in ('8', 'eight'):
        return 8
    elif s in ('9', 'nine'):
        return 9
    else:
        raise RuntimeError()

with open('adv01.txt') as f:
    t = f.readlines()
sum = 0
for l in t:
    if l:
        matches = [m.group(1) for m in pat.finditer(l)]
        sum += conv(matches[0]) * 10 + conv(matches[-1])
print(sum)