s = '>' + 26 * '1' + 10 * '2' + 14 * '3'
while '>1' in s or '>2' in s or '>3' in s:
    if '>1' in s:
        s = s.replace('>1', '22>', 1)
    if '>2' in s:
        s = s.replace('>2', '2>', 1)
    if '>3' in s:
        s = s.replace('>3', '1>', 1)
sum = 0
for i in range(len(s) - 1):
    sum += int(s[i])
print(sum)