#!/usr/bin/python

def rationalize_contfrac (frac):
        if len(frac) == 0:
                return (1, 0)
        elif len(frac) == 1:
                return (frac[0], 1)
        else:
                remainder = frac[1:len(frac)]
                (num, denom) = rationalize_contfrac(remainder)
                return (frac[0] * num + denom, num)

frac = [2,1,2,1,1,4]
i = 4
x = 7
while len(frac) < 100:
        if x%3 == 0:
                i = i + 2
                frac.append(i)
        if x%3 > 0:
                frac.append(1)
        x = x + 1

n = rationalize_contfrac(frac)
s = 0
for i in str(n[0]):
        s = s + int(i)
print s