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  1. def fib(n):
  2.     sequence = []
  3.     i = 0
  4.     while i < n:
  5.         if i == 0:
  6.             sequence.append(1)
  7.             i=i+1
  8.         else:
  9.             if i == 1:
  10.                 sequence.append(2)
  11.                 i=i+1
  12.             else:
  13.                 sequence.append(sequence[i-1]+sequence[i-2])
  14.                 i=i+1
  15.     return sequence[n-1]
  16.  
  17.  
  18. def firstfib(n):
  19.     m=1
  20.     while fib(m) <= n:
  21.         m=m+1
  22.     return m
  23.  
  24. def evenfibsum(n):
  25.     k = 0
  26.     sum = 0
  27.     while 2+3*k < firstfib(n):
  28.         sum = sum + fib(2+3*k)
  29.         k = k+1
  30.     return sum
  31.  
  32. print evenfibsum(3)
  33.  
Runtime error #stdin #stdout 0.02s 5760KB
comments (?)
stdin 
Standard input is empty
stdout 
Standard output is empty
https://ideone.com/jtolc
language:
Python 3 (python  3.12)
created:
14 years ago
visibility:
public

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