# L-10 MCS 260 Wed 3 Feb 2010 : write_values.py
#
# Input: a string of at most two words representing a number,
#        separated by exactly one space.
# Output: the corresponding numerical value of the words
#         in the string.
#
# This is the inverse of the Python script write_numbers of L-9,
# except that it is limited to numbers up to 100.
#
d = { 'zero':0, 'one':1, 'two':2, 'three':3, 'four':4, \
      'five':5, 'six':6, 'seven':7, 'eight':8, 'nine':9, \
      'ten':10, 'eleven':11, 'twelve':12, 'thirteen':13, \
      'fourteen':14, 'fifteen':15, 'sixteen':16, 'seventeen':17, \
      'nineteen':19, 'twenty':20, 'thirty':30, 'forty':40, \
      'fifty':50, 'sixty':60, 'seventy':70, 'eighty':80, \
      'ninety':90, 'hundred':100 \
}
s = raw_input('give a number in words : ')
outcome = 'the value of ' + s + ' is '
if d.has_key(s):
   outcome += str(d[s])
else:
   L = s.split(' ')
   outcome += str(d[L[0]] + d[L[1]])
print outcome