16 lines
311 B
Python
16 lines
311 B
Python
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try:
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a, b, m, n = map(float, input().split())
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except Exception:
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print("Ошибка: введите 4 числа через пробел")
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raise SystemExit(1)
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if m > n:
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m, n = n, m
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if a == 0:
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print("YES" if b == 0 else "NO")
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else:
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x = -b / a
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print("YES" if m <= x <= n else "NO")
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