import sys

D = [str(i) for i in range(1,10)]
if sys.argv[1] == "2":
    D += ['one','two','three','four','five','six','seven','eight','nine']

def process_line(l):
    k = list()
    for p in range(len(l)):
        for i,d in enumerate(D):
            if l[p:p+len(d)] == d:
                k.append(i%9+1)
                break
    return '!'.join(map(str,k)), k[0]*10 + k[-1] if len(k)>0 else 0

R=0
for l in sys.stdin.readlines():
    n = process_line(l[:-1])
    R+=n[1]
print(R)