38 lines
619 B
Python
38 lines
619 B
Python
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#!/usr/bin/env python3
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import sys
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def UFM(A):
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if len(A) == 0:
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return None
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m = 0
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M = len(A)
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while M - 1 != m:
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if M - 2 == m:
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if A[m] > A[m + 1]:
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return A[m]
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else:
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return A[m + 1]
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lh = (M - m) // 2
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if A[lh - 1] < A[lh] and A[lh] > A[lh + 1]:
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return A[lh]
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elif A[lh - 1] < A[lh]:
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m = lh
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else:
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M = lh
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return A[m]
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A = []
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for line in sys.stdin:
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line = line.strip()
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if line == '' or line == '\n':
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break
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A.append(int(line))
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print(UFM(A))
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