#!/usr/bin/env python3 import math from math import comb from tqdm import tqdm lines = (x.strip() for x in open("input.txt")) result = 0 for line in tqdm(lines, total=200): numbers = [int(x) for x in line.split(" ")] combinations = [((idx+len(numbers))%2*2-1) * comb(len(numbers), idx) for idx in range(len(numbers))] for _ in range(365*5): numbers.append(sum(factor*val for factor, val in zip(combinations, numbers))) combinations.append(-1) combinations = [-combinations[0] if i == 0 else combinations[i-1]-combinations[i] for i in range(len(combinations))] result += numbers[-1] print(result) print(result == 209183938389133193643668550962121882909751535)