import re

with open("input", "r") as f:
    line = f.read()

ranges = line.split(",")

s = 0

for _range in ranges:
    start, end = list(map(int, _range.split("-")))
    for i in range(start, end+1):
        if re.match(r"^(.+)\1$", str(i)):
            s += i

print(s)