bottomUp.java

 public void decideTwo() {
        List<Integer>[] adjList = new List[maxPizzas + 1];

        for (int i = 0; i <= maxPizzas; ++i) {
            adjList[i] = new ArrayList<>();
        }

        boolean[] done = new boolean[maxPizzas + 1];
        done[0] = true;
        for (int i = 1; i <= maxPizzas; ++i) {
            for (int j = 0; j < slices.size(); ++j) {
                if (i - slices.get(j) < 0) continue;
                if (done[i - slices.get(j)]) {
                    List<Integer> curr = adjList[i - slices.get(j)];
                    boolean isUsed = false;
                    for (Integer integer : curr) {
                        if (integer == j) {
                            isUsed = true;
                            break;
                        }
                    }
                    if (!isUsed) {
                        for (int st : curr) {
                            adjList[i].add(st);
                        }

                        adjList[i].add(j);
                        done[i] = true;
                        break;
                    }

                }
            }
        }

        for (int i = maxPizzas; i >= 0; --i) {
            if (done[i]) {
                solution = adjList[i];
                System.out.println(i);
                break;
            }
        }
    }