+ [Linear Time Algorithms for Knapsack Problems with Bounded Weights](https://www.sciencedirect.com/science/article/abs/pii/S0196677499910349) + [Fast solution to Subset sum algorithm by Pisinger](https://stackoverflow.com/questions/9962568/fast-solution-to-subset-sum-algorithm-by-pisinger) + [Subset Sum](https://www.acmicpc.net/problem/23492)
