#!/usr/bin/env python3 def main() -> None: with open("input", "r") as f: nums = [int(n) for n in f.readlines()] # START PART 2 nums = [nums[i] + nums[i - 1] + nums[i - 2] for i in range(2, len(nums))] # END PART 2 print(sum(nums[i] > nums[i - 1] for i in range(1, len(nums)))) if __name__ == "__main__": main()