In the above problem, the sample input and output is given by: Sample Input: \begin{equation} \text{3 3} \\ \text{1 1 1} \\ \text{2 2 1} \\ \text{3 1 5} \\ \end{equation} Sample Output: 3 Explanation: First we can hire worker 1 and let him paint 1 unit. Then we can hire worker 2 who is now av...