19 lines
301 B
Python
19 lines
301 B
Python
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def problem_p03524(input_data):
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from collections import Counter
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def check(a, b):
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return abs(a - b) <= 1
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C = Counter(eval(input_data))
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a, b, c = (C[s] for s in "abc")
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if check(a, b) and check(b, c) and check(c, a):
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return "YES"
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else:
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return "NO"
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