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Simmetriya

y=a\(x^2\)+bx+c parabolaning simmetriya o'qini toping.


Kiruvchi ma'lumotlar:

a, b, c (0 <= a, b, c <= \(10^3\))


Chiquvchi ma'lumotlar:

Masalaning javobi


Misollar
# input.txt output.txt
1
2 -1 -3
0.25
2
4 3 2
-0.375
Izoh:

.