Вопрос:

The provided image contains a programming problem in multiple languages (Python, Pascal, C++, Algorithmic language) and a list of input pairs for variables s and t. The task is to identify which of these pairs will result in the program outputting "NO". The condition for outputting "YES" is `s < -6` AND `t < -2`. Therefore, the program will output "NO" if this condition is FALSE. This means either `s >= -6` OR `t >= -2` (or both). Let's evaluate each pair: 1) (2, -6): s = 2, t = -6 Is s < -6? 2 < -6 is False. Is t < -2? -6 < -2 is True. Since the condition `s < -6 AND t < -2` is False (because `s < -6` is False), the output is "NO". 2) (-6, -4): s = -6, t = -4 Is s < -6? -6 < -6 is False. Is t < -2? -4 < -2 is True. Since the condition `s < -6 AND t < -2` is False (because `s < -6` is False), the output is "NO". 3) (-8, -7): s = -8, t = -7 Is s < -6? -8 < -6 is True. Is t < -2? -7 < -2 is True. Since BOTH `s < -6` and `t < -2` are True, the condition `s < -6 AND t < -2` is True. Therefore, the output is "YES". 4) (-10, -2): s = -10, t = -2 Is s < -6? -10 < -6 is True. Is t < -2? -2 < -2 is False. Since the condition `s < -6 AND t < -2` is False (because `t < -2` is False), the output is "NO". 5) (-7, -10): s = -7, t = -10 Is s < -6? -7 < -6 is True. Is t < -2? -10 < -2 is True. Since BOTH `s < -6` and `t < -2` are True, the condition `s < -6 AND t < -2` is True. Therefore, the output is "YES". The pairs that output "NO" are 1, 2, and 4. The question asks to select ALL pairs for which the program will print "NO" and write the numbers under which they are indicated. The answer should be the numbers of the selected pairs in ascending order. Therefore, the answer is 1, 2, 4.

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Ответ:

Решение:

Программа выводит "YES", если условие (s < -6) and (t < -2) истинно. Во всех остальных случаях выводится "NO". Это означает, что "NO" будет выведено, если s >= -6 ИЛИ t >= -2.

Проверим каждую пару:

  • 1) (2, -6): s = 2, t = -6. Условие (2 < -6) and (-6 < -2) ложно, так как 2 < -6 ложно. Следовательно, вывод: "NO".
  • 2) (-6, -4): s = -6, t = -4. Условие (-6 < -6) and (-4 < -2) ложно, так как -6 < -6 ложно. Следовательно, вывод: "NO".
  • 3) (-8, -7): s = -8, t = -7. Условие (-8 < -6) and (-7 < -2) истинно, так как оба под-условия истинны. Следовательно, вывод: "YES".
  • 4) (-10, -2): s = -10, t = -2. Условие (-10 < -6) and (-2 < -2) ложно, так как -2 < -2 ложно. Следовательно, вывод: "NO".
  • 5) (-7, -10): s = -7, t = -10. Условие (-7 < -6) and (-10 < -2) истинно, так как оба под-условия истинны. Следовательно, вывод: "YES".

Пары, для которых программа напечатает "NO", это 1, 2 и 4.

Ответ: 1, 2, 4

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