17 lines
490 B
Python
17 lines
490 B
Python
'''****** Задание ********
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*Красота спасёт мир.
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'''
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num = int(input())
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first = num // 100
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second = num // 10 % 10
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third = num % 10
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if max(first, second, third) != first and min(first, second, third) != first:
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middle = first
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elif max(first, second, third) != second and min(first, second, third) != second:
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middle = second
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else:
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middle = third
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if max(first, second, third) + min(first, second, third) == middle * 2:
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print('YES')
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else:
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print('NO') |