def read_input():
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return [int(x) for x in open('input.txt', 'r').readlines()]
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def find_elements(input, sum=2020):
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for a in input:
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for b in input:
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if a + b == sum:
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return (a, b)
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if __name__ == '__main__':
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a, b = find_elements(read_input())
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print('{0} * {1} = {2}'.format(a, b, a * b))
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