Краткое пояснение: Нужно найти наибольшее целое значение A, при котором программа напечатает «YES» шесть раз.
Разбираемся:
- Условие для вывода "YES": s > 10 или t > A.
- Условие для вывода "NO": s <= 10 и t <= A.
Проверяем пары чисел для разных значений A:
A = 11:
- (1, 2): s = 1, t = 2. s <= 10 и t <= 11 => NO
- (11, 2): s = 11, t = 2. s > 10 => YES
- (1, 12): s = 1, t = 12. t > 11 => YES
- (11, 12): s = 11, t = 12. s > 10 => YES
- (-11, -12): s = -11, t = -12. s <= 10 и t <= 11 => NO
- (12, 11): s = 12, t = 11. s > 10 => YES
- (10, 10): s = 10, t = 10. s <= 10 и t <= 11 => NO
- (10, 5): s = 10, t = 5. s <= 10 и t <= 11 => NO
Количество YES: 4 (не подходит)
A = 10:
- (1, 2): s = 1, t = 2. s <= 10 и t <= 10 => NO
- (11, 2): s = 11, t = 2. s > 10 => YES
- (1, 12): s = 1, t = 12. t > 10 => YES
- (11, 12): s = 11, t = 12. s > 10 => YES
- (-11, -12): s = -11, t = -12. s <= 10 и t <= 10 => NO
- (12, 11): s = 12, t = 11. s > 10 => YES
- (10, 10): s = 10, t = 10. s <= 10 и t <= 10 => NO
- (10, 5): s = 10, t = 5. s <= 10 и t <= 10 => NO
Количество YES: 4 (не подходит)
A = 9:
- (1, 2): s = 1, t = 2. s <= 10 и t <= 9 => NO
- (11, 2): s = 11, t = 2. s > 10 => YES
- (1, 12): s = 1, t = 12. t > 9 => YES
- (11, 12): s = 11, t = 12. s > 10 => YES
- (-11, -12): s = -11, t = -12. s <= 10 и t <= 9 => NO
- (12, 11): s = 12, t = 11. s > 10 => YES
- (10, 10): s = 10, t = 10. s <= 10 и t > 9 => YES
- (10, 5): s = 10, t = 5. s <= 10 и t <= 9 => NO
Количество YES: 5 (не подходит)
A = 8:
- (1, 2): s = 1, t = 2. s <= 10 и t <= 8 => NO
- (11, 2): s = 11, t = 2. s > 10 => YES
- (1, 12): s = 1, t = 12. t > 8 => YES
- (11, 12): s = 11, t = 12. s > 10 => YES
- (-11, -12): s = -11, t = -12. s <= 10 и t <= 8 => NO
- (12, 11): s = 12, t = 11. s > 10 => YES
- (10, 10): s = 10, t = 10. s <= 10 и t > 8 => YES
- (10, 5): s = 10, t = 5. s <= 10 и t <= 8 => NO
Количество YES: 6 (подходит)
Ответ: 8