$\text{ If the length of the tangent to the curve }y=x^3+3x^2+4x-1\text{ at the }$$\text{ point }\mathrm{x}=0\text{ is }\mathrm{K},\text{ then the value of }\left[K\right],\text{ where }\left[\right]\to \text{ denote the greatest }$$\text{ integer function. }$