def backPack(self, m, A):
        result = [0]
        self.dfs(A, 0, m, result)
        return result[0]
Dot product-based Euclidean norm implementation
dataset/ETHPy150Open algorhythms/LintCode/Backpack.py/Solution_TLE.backPack--crossover with--dataset/ETHPy150Open scikit-learn/scikit-learn/sklearn/decomposition/nmf.py/norm