Continous Integer Knapsack Set KI={(s,y)∈R+1×Z+n:∑j=1najyj≤b+s}K^{I}=\left\{(s, y) \in \mathbb{R}_{+}^{1} \times \mathbb{Z}_{+}^{n}: \sum_{j=1}^{n} a_{j} y_{j} \leq b+s\right\}KI={(s,y)∈R+1×Z+n:j=1∑najyj≤b+s} Mixed Integer Rounding Ungleichung