def parse(s):
    ret = []
    for pair in s.split(','):
        x,y = pair.split('-')
        ret.append((int(x),int(y)))
    return ret

def solve(input):
    with open(input) as f:
        ranges = parse(f.read())

    t = 0
    for lo,hi in ranges:
        invalid = list(findinvalid(lo,hi))
        if len(invalid) == 0:
            print(lo,hi,invalid)
        t += sum(invalid)
    print(t)

def findinvalid(lo, hi):
    assert len(str(hi)) - len(str(lo)) <= 1
    assert lo <= hi
    j = len(str(lo)) // 2
    if j < 1:
        # (1,19) => [11]
        j = 1
    for B in [10**j, 10**(j+1)]:
        for i in range(lo//B, hi//B+1):
            if i < B//10:
                continue
            if i >= B:
                break
            id = i*B + i
            if lo <= id <= hi:
                assert(str(i)+str(i) == str(id)), (i,id)
                #print(lo, hi, i,B,id)
                yield id

#solve("sample")
solve("input")