code: def nth_fibonacci_5(n):
      fib = [[1, 1], [1, 0]]
      res = [[1, 1], [1, 0]]
  
      for i in range(n):
          matrix_mult(res, fib)
  
      return res[1][1]
  
file_path: coding-problems/Other/nth_fibonacci_number.py
imports: import math
label_desc: Use image node_id 6 for calling a global function with example usage: nth_fibonacci_5(n) and returns: res