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  3. Project Euler #25: N-digit Fibonacci number
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Project Euler #25: N-digit Fibonacci number

  • varresumanchait1
     + 1 comment
    from math import log10 as log
from math import sqrt
def num_of_digits(n):
    if n == 1:
        return 1
    a = log((1 + sqrt(5))/2)
    b = ((log(5)) / 2)
    return(int((n+b-1)/a) + 1)
# print(num_of_digits(5))
T = int(input())
for a0 in range(T):
    N = int(input())
    print(num_of_digits(N))