n = "! one two three four five six seven eight nine".split()
w = 0
try:
    while l := input():
        g = [x for x in enumerate(l) if x[1].isdigit()]
        for a in n:
            if a in l:
                k = str(n.index(a))
                g += (l.find(a), k), (l.rfind(a), k)
        g.sort()
        w += int(g[0][1] + g[-1][1])
except:
    print(w)