Ако x и y са цели числа и  x - y   11 , каква е минималната възможна стойност на xy ?
x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x   x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x  x   x  x  x  x    x  x   x  x   x  x  x  x  x  x  x  x  x  x  x  x  x    x   x  x   x  x          x  x                                           x
multiply(negate(add(const_2, const_3)), subtract(11, add(const_2, const_3)))