30 lines
611 B
Python
30 lines
611 B
Python
#!/usr/bin/python3
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# 2^15 = 32768 and the sum of its digits is 3 + 2 + 7 + 6 + 8 = 26.
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#
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# What is the sum of the digits of the number 2^1000?
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from timeit import default_timer
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def main():
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start = default_timer()
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# Simply calculate 2^1000, convert the result to string and calculate
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# the sum of the digits
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res = str(2 ** 1000)
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sum_ = 0
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for i in res:
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sum_ = sum_ + int(i)
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end = default_timer()
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print('Project Euler, Problem 16')
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print('Answer: {}'.format(sum_))
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print('Elapsed time: {:.9f} seconds'.format(end - start))
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if __name__ == '__main__':
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main()
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